Our Pond Care Services

At That Pond Guy, we provide professional pond care services for homeowners, estates, and organisations across Kent, London, and the South East. Whether you are looking to restore a tired garden pond, maintain a koi pond properly, upgrade filtration equipment, or manage a large pond or lake, our services are designed to keep water features healthy, reliable, and enjoyable all year round.

We work with all types of ponds, from small wildlife ponds through to complex koi systems and large estate lakes. Our team handles everything in house, including pond cleaning, ongoing maintenance, fibreglass lining, filtration upgrades, relining and repairs, bespoke pond construction, and specialist lake treatments. This joined up approach means problems are identified properly and solutions are designed to last, rather than being short term fixes.

Every pond is different, which is why our services are flexible and tailored to how your pond is used, stocked, and maintained. Some ponds require occasional intervention, while others benefit from regular professional care. Below you will find an overview of our core services, each with more detailed information available if you would like to explore further.

Pond Cleaning Services

A full pond clean is often the most effective way to reset a pond that has become overgrown, murky, or difficult to manage. Over time, organic waste, sludge, and debris build up on the pond floor and within the filtration system, affecting water quality and fish health. Our pond cleaning service restores the pond to a clean, stable condition and makes ongoing maintenance far easier.

A full pond clean typically includes:

  • Draining the pond and safely relocating fish into a filtered and aerated holding system

  • Removing accumulated sludge, debris, and organic waste from the pond

  • Thoroughly cleaning filters, pumps, and UV units to restore performance

  • Cutting back and tidying aquatic plants where required

  • Refilling the pond with treated water before safely reintroducing the fish

This service can be carried out at any time of year and is suitable for both fish ponds and ornamental ponds. Many customers choose a full clean as a one off reset, while others combine it with ongoing maintenance to keep the pond in top condition long term.

Koi Pond Design and Construction

A professionally built koi pond transforms your garden into a striking feature while providing a safe, stable environment for your fish. Koi ponds require careful planning, correct construction methods, and properly designed filtration systems to ensure long term success. We manage the entire build process, making it clear, structured, and stress free from start to finish.

Our koi pond building service typically includes:

  • Excavation and groundworks to create a solid and level structure

  • Construction of the pond shell using proven building methods

  • Installation of high quality liners or fibreglass finishes

  • Design and installation of filtration, pumps, and UV systems

  • Optional features such as waterfalls, streams, lighting, or viewing windows

Each pond is designed around your space, your fish, and how you want to enjoy the pond. Once complete, the system is fully commissioned and running, giving you a koi pond that is built to perform reliably for years to come.

Pond Building Services

A professionally built pond creates a long lasting feature that enhances your garden while remaining practical and easy to maintain. From simple wildlife ponds through to more structured ornamental designs, we build ponds that are carefully planned, correctly constructed, and built to perform reliably over time.

Our pond building service covers every stage of the process, ensuring the finished pond suits your space, usage, and long term expectations.

Pond building typically includes:

  • Excavation and shaping to create correct depth and structure

  • Installation of liners or fibreglass finishes where required

  • Integration of pumps, filtration, and water features

  • Thoughtful edging and finishing to suit the surrounding garden

Whether you are replacing an existing pond or creating a brand new feature, our experience ensures your pond is built properly from the ground up, avoiding common issues and making future care far easier.

Pond Fibreglassing Services

Fibreglass lining provides a seamless, durable, and long lasting waterproof finish for ponds and water features. It is an ideal solution for new pond builds, refurbishments, and conversions where reliability and longevity are essential. Our onsite fibreglassing service creates a strong, watertight structure that stands up to daily use and changing conditions.

Our pond fibreglassing service includes:

  • Draining the pond and preparing surfaces where required

  • Applying a GRP fibreglass lining to create a seamless waterproof shell

  • Ensuring a smooth, durable, and leak free finish

Unlike flexible liners, fibreglass does not crease, lift, or tear, and is far more resistant to damage from stones, tools, or wildlife. It is particularly well suited to koi ponds and formal water features where long term performance matters.

Pond Maintenance Services

Regular pond maintenance keeps your pond looking its best while preventing problems from developing over time. Without routine care, filters clog, plants become overgrown, water quality deteriorates, and minor issues can turn into costly repairs. Our maintenance service is designed to keep ponds healthy, balanced, and reliable throughout the year.

Pond maintenance can include:

  • Cleaning and maintaining filtration systems to ensure efficient operation

  • Blanket weed and algae management where required

  • Cutting back and managing aquatic plants to maintain balance and appearance

  • Checking pumps, UV units, air pumps, and pipework for faults or wear

  • General pond health checks to catch issues early

Maintenance visits can be scheduled to suit your pond and how it is used, whether that’s monthly, quarterly, or seasonally. This service is ideal for pond owners who want peace of mind and a consistently well kept pond without the hassle.

Large pond and lake maintenance carried out by specialist pond contractors

Large Pond and Lake Management Services

Large ponds and lakes require a very different approach to smaller garden ponds. Without proper management, issues such as excessive silt build up, invasive plant growth, and poor water quality can develop over time. Our large pond and lake services are tailored to estates, commercial sites, and private landowners managing larger bodies of water.

Our large pond and lake services can include:

  • Silt removal and dredging to restore depth and water volume

  • Management of invasive plants such as reed mace, duckweed, and coontail

  • Removal of surface debris and control of algae growth

  • Ongoing water quality monitoring and management

  • Pruning and managing aquatic planting to maintain balance

These services can be delivered as one off interventions or as part of a regular management programme, helping to maintain both the appearance and ecological health of large water features.

Pond Filters, Pumps & Upgrades

Modern filtration and pump systems play a vital role in maintaining clear, healthy pond water. Older or undersized equipment often struggles to cope with waste levels, leading to poor water quality and stressed fish. We supply and install correctly sized, efficient systems designed to match your pond and stocking levels.

Our filter and pump services include:

  • Installing new or upgraded filtration systems

  • Fitting efficient pumps to improve circulation and aeration

  • Upgrading UV systems to improve water clarity

  • Tailored solutions for ornamental ponds, koi ponds, and larger systems

A well designed filtration system makes ponds easier to maintain and far more enjoyable. While it is possible to under filter a pond, over filtration simply adds stability and resilience to the system.

Pond relining and repair work being carried out on an existing garden pond

Pond Relining and Repair Services

If your pond is leaking or the existing liner is failing, relining or repair may be the most practical solution. Ageing liners, poor installation, or ground movement can all lead to water loss and ongoing issues. We assess the condition of the pond and recommend the most suitable long term fix.

Our pond relining and repair services include:

  • Supplying and installing high quality rubber liners and underlay

  • Replacing damaged or ageing liners to create a watertight finish

  • Converting liner ponds to fibreglass ponds, including rendering where required

These works not only resolve leaks but also improve the overall reliability and lifespan of the pond, giving you confidence that the structure is sound and secure.

Completed pond project showing a professionally restored water feature

Pond Projects

Our pond projects showcase the breadth of work we carry out, from restorations and upgrades through to bespoke new builds. Many of the ponds we work on have evolved over decades and require thoughtful design and careful execution to bring them back to life or adapt them to modern systems.

Our project work includes:

  • Restoring ageing ponds and streams

  • Designing and installing bespoke features such as jetties and waterfalls

  • Upgrading filtration and pond infrastructure

Each project highlights our practical approach, attention to detail, and commitment to delivering long lasting results that enhance both the pond and its surroundings.

Oase Lake Therapy

Large ponds, lakes, and natural swimming ponds can suffer from complex water quality issues that are not resolved through filtration alone. Excess nutrients, algae blooms, and unstable water parameters often require targeted treatment. Our lake therapy service focuses on addressing these underlying causes.

Our lake therapy services include:

  • Stabilising water parameters to support a balanced ecosystem

  • Controlling algae growth through targeted treatments

  • Binding excess nutrients that fuel recurring water quality problems

  • Applying professional Oase Lake Therapy products tailored to the specific issue

These treatments are designed to improve clarity, water health, and long term stability, supporting both aquatic life and surrounding wildlife.

Contact Us

Please get in touch to discuss your pond needs and we will get back to you as soon as possible.

matt@thatpondguy.co.uk
07368 372129

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Frequently Asked Questions

General Questions About Our Pond Care Services

What areas do you cover for pond care services?
We provide professional pond care services across Kent, London, and the South East, including Surrey, Sussex, Essex, Hertfordshire, Buckinghamshire, Bedfordshire, Suffolk, and Norfolk. We have dedicated location and service pages that show the type of pond work we regularly carry out in each area, including Pond Cleaning, Pond Maintenance, Pond Fibreglassing, and Koi Pond Building services delivered locally.


Do you only work on domestic garden ponds?
No. While we work on many private garden ponds, we also carry out pond care, filtration upgrades, and long term management for estates, schools, councils, and commercial sites. Larger scale projects and waterbody management are covered under Large Pond and Lake Services and Oase Lake Therapy.


What types of pond do you specialise in?
We specialise exclusively in ponds and water features, including ornamental ponds, wildlife ponds, koi ponds, formal water features, natural swimming ponds, and large ponds and lakes. You can see the full range of work we carry out on our Pond Projects page, which includes restorations, upgrades, and bespoke builds.


Do you offer one off pond services or ongoing care?
We offer both. Some customers contact us for a one off Pond Cleaning, filtration upgrade, or repair, while others prefer regular Pond Maintenance visits. Many ponds benefit from starting with a full clean and then moving onto ongoing care to keep things under control long term.


Can you help if I’m not sure what my pond needs?
Yes. This is very common. Many pond owners know something is not quite right, but are unsure whether the issue relates to filtration, water quality, planting, or structure. We are happy to review photos, discuss the history of the pond, or arrange a site visit to identify the most appropriate solution. Please Contact Us.


How experienced are you as a company?
We work exclusively with ponds and water features and carry out pond cleaning, maintenance, fibreglassing, filtration upgrades, and pond construction year round. Our experience covers everything from small garden ponds through to complex koi systems and large estate lakes. You can see real examples on our Pond Projects page and read specialist advice in our Blog.


Do you work all year round or only in warmer months?
We work all year round. Pond care is seasonal, but not seasonal only. Cleaning, maintenance, repairs, fibreglassing, filtration upgrades, and water quality management can all be carried out throughout the year. Our Pond Care Guide (Seasonal) explains how pond care changes across spring, summer, autumn, and winter.


Are you fully insured to carry out pond works?
Yes. We are fully insured for pond cleaning, maintenance, construction, fibreglassing, filtration upgrades, and lake management works. This applies to residential gardens, estates, and commercial sites. Visit our Testimonials page for real customer reviews.


Do you work with existing ponds or only new builds?
We work with both. Many projects involve improving or upgrading existing ponds rather than starting from scratch. This might include relining, fibreglassing, upgrading filtration, or redesigning layout and planting. Our Koi Pond Building page explains how we approach both new ponds and major refurbishments.


Can you improve an old pond without rebuilding everything?
In many cases, yes. Older ponds often suffer from outdated filtration, failing liners, or poor circulation rather than structural failure. Upgrading filters, pumps, or converting to fibreglass can dramatically improve performance without a full rebuild. Our Pond Filters, Pumps and Upgrades page explains these options in more detail.


Do you supply pond equipment as well as install it?
Yes. We supply and install a wide range of pond equipment including filters, pumps, UV clarifiers, air pumps, pond heating, and treatment products. Many customers also choose to purchase equipment directly from our Shop and install it themselves with guidance if required.


Can I buy products from you even if I’m not booking a service?
Yes. Our Shop is open to all customers, whether or not you are using our installation or maintenance services. We stock equipment suitable for garden ponds, koi ponds, and large ponds and lakes.


Do you offer advice before carrying out any work?
Yes. We believe good advice prevents unnecessary work and cost. We are always happy to explain options, recommend suitable equipment, and point customers towards relevant guides on water quality, filtration, and seasonal care before any work is booked.


Why should I choose a specialist pond company rather than a general landscaper or gardener?
Ponds are complex systems involving water chemistry, filtration, electrics, and fish welfare. A specialist pond company understands how these elements interact and can prevent long term issues. You can see specialist examples on our Pond Projects page and read technical guides such as Common Pond Problems and How to Fix Them.


How do I get started or request a quote?
You can contact us directly via our Contact page or by phone. Once we understand your pond and what you would like to achieve, we will guide you through the next steps.


Pond Cleaning and Maintenance

What is the difference between pond cleaning and pond maintenance?
A pond clean is a deeper, one off process that removes built up sludge, debris, and organic waste from the pond itself. Pond maintenance focuses on keeping the pond running smoothly through regular visits, cleaning filters, managing plants, and preventing problems from developing. Many ponds benefit from starting with a full Pond Cleaning and then moving onto regular Pond Maintenance.


How often should a pond be cleaned?
There is no fixed rule. The frequency depends on pond size, stocking levels, planting, and filtration. Lightly stocked garden ponds may only need a clean every few years, while koi ponds and heavily stocked ponds often require more regular attention alongside maintenance. Our Pond Care Guide (Seasonal) explains how pond needs change throughout the year.


Do you offer pond cleaning services across all counties you cover?
Yes. We provide professional pond cleaning services across Kent, London, and the South East. This includes regular work in Pond Cleaning in Kent, Pond Cleaning in Surrey, Pond Cleaning in London, Pond Cleaning in Sussex and Pond Cleaning in Essex,
Each county page shows examples of the type of ponds we clean locally, along with more detail on how the service is delivered in that area.


Can pond cleaning be carried out in winter?
Yes. Pond cleaning can be carried out all year round. In many cases, winter is an ideal time to reset a pond before spring growth begins. We take additional care with fish welfare, water temperature, and refilling during colder weather.


Will my fish need to be removed during a pond clean?
For a full deep clean, fish are usually temporarily relocated into a filtered and aerated holding system so work can be carried out safely. For lighter maintenance visits, fish can often remain in the pond. Fish health and welfare are always prioritised.


How long does a pond clean usually take?
Most pond cleans are completed within a single day. Larger ponds, koi ponds, or ponds with significant sludge build up may take longer. We always explain expected timescales before work begins.


Do wildlife ponds still need cleaning and maintenance?
Yes. Even wildlife ponds require occasional intervention. Over time, silt and organic matter build up, reducing depth and water quality. Thinning plants and removing excess sludge helps keep the pond healthy while still supporting wildlife. We explain this approach in our Wildlife Pond Maintenance Tips article.


Why does my pond keep going green?
Green water is usually caused by excess nutrients combined with sunlight. This may be due to poor filtration, insufficient UV clarification, overstocking, or decaying organic matter. Treating the symptom alone rarely works long term. Our guide to Best Blanketweed Treatment You Can Buy explains how algae issues should be tackled properly.


What causes sludge build up in ponds?
Sludge is made up of fish waste, decaying plant matter, and debris that settles on the pond floor over time. Without removal, it can affect water quality and oxygen levels. Regular maintenance and occasional cleaning prevent excessive build up. Our Common Pond Problems and How to Fix Them guide explains this in more detail.


Does cleaning remove beneficial bacteria from the pond?
Some beneficial bacteria will be reduced during a full clean, but this is expected and managed correctly. Filters are restarted properly, and water conditions are stabilised to allow bacteria to re establish. In heavily neglected ponds, a clean often improves overall biological balance rather than harming it.


How do you manage water quality after a pond clean?
After cleaning, we ensure water is treated correctly and filtration is restarted properly. Monitoring ammonia, nitrite, and pH is essential during this period. Our guides on Water Hardness and pH Stability and pH Levels in Ponds explain how these factors affect pond health.


Do ponds need maintenance all year round?
Yes. While tasks vary seasonally, year round maintenance helps prevent problems building up. Winter focuses more on checks and preparation, while spring and summer involve more plant and water quality management. Our Pond Care Guide (Seasonal) covers this in detail.


What equipment helps keep a pond clean between visits?
Effective filtration, UV clarification, aeration, and circulation all help reduce maintenance needs. In some ponds, additional equipment such as pond vacuums can also be useful. You can explore suitable options in our Pond Filters, Pond Pumps, Air Pumps, and Pond Vacuum categories.


Can you combine pond cleaning with regular maintenance?
Yes. Many customers choose to start with a full clean and then move onto ongoing maintenance visits. This keeps the pond looking its best and prevents the need for frequent deep cleans.


Water Quality and Fish Health

Why is water quality so important in ponds?
Water quality underpins everything in a pond, from fish health to plant growth and filtration performance. Poor water quality is one of the most common causes of stressed fish, disease, algae problems, and ongoing maintenance issues. Understanding how different parameters interact is essential, particularly in stocked ponds.


What water parameters should pond owners be monitoring?
Key parameters include ammonia, nitrite, nitrate, pH, water hardness, temperature, and oxygen levels. Changes in any of these can impact fish health and biological filtration. Our guides on Water Hardness and pH Stability and pH Levels in Ponds explain these factors in detail.


What causes ammonia and nitrite spikes in ponds?
Ammonia and nitrite are produced by fish waste, uneaten food, and decaying organic matter. Spikes often occur after heavy feeding, filter cleaning, fish additions, or pond cleans if filtration is not managed correctly. Our Ammonia and Nitrite Management guide explains how these spikes occur and how to control them.


How does filtration affect water quality?
Filtration removes physical waste and supports beneficial bacteria that break down harmful compounds. Undersized or outdated filtration systems are a common cause of poor water quality. Our Evolution Aqua Nexus Filter Guide explains how one of the more popular koi pond filters works and why correct sizing matters.


Why is oxygen important for fish and filters?
Oxygen is essential for fish health and for the bacteria that power biological filtration. Low oxygen levels can lead to stressed fish, reduced filter efficiency, and poor water quality. Our guide on Oxygenation and Aeration explains when ponds benefit from additional aeration.


When should I consider adding aeration to my pond?
Aeration is particularly beneficial during summer when water holds less oxygen, and during winter when ice cover can restrict gas exchange. Ponds with fish or heavy stocking almost always benefit from additional aeration. Suitable equipment can be found in our Air Pumps category.


How does water temperature affect pond health?
Water temperature affects fish metabolism, feeding behaviour, filtration performance, and oxygen levels. Sudden temperature changes can stress fish. Our Pond Heating Guide explains how temperature control can help stabilise ponds, particularly koi ponds.


Should ponds be heated during winter?
Not all ponds need heating, but koi ponds and heavily stocked ponds often benefit from maintaining a more stable winter temperature. Heating can reduce stress and improve fish health during colder months. Heating options can be explored in our Pond Heating product category.


How does feeding affect water quality?
Overfeeding is a common cause of water quality problems. Uneaten food and excess waste quickly lead to ammonia spikes and algae growth. Feeding should be adjusted seasonally. Our What to Feed Koi in Winter guide explains how feeding changes as temperatures drop.


Can poor water quality affect koi behaviour?
Yes. Changes in behaviour such as hiding, flashing, or lethargy are often linked to water quality issues. Understanding normal behaviour helps spot problems early. Our guides on Understanding Koi Behaviour and Why Are My Koi Scared of Me? explore this in more detail.


How can I improve water quality without constant treatments?
Long term water quality improvement comes from correct filtration, good circulation, appropriate stocking levels, and sensible feeding. Chemical treatments alone rarely solve underlying issues. Our Common Pond Problems and How to Fix Them guide explains how to address root causes rather than symptoms.


Do plants help with water quality?
Yes. Aquatic plants can help absorb nutrients and provide shade, but they must be balanced correctly. Too many plants can cause issues just as easily as too few. Our Best Plants for Koi Pond guide explains which plants are suitable and how to manage them.


Can you test water quality as part of your services?
Yes. Water quality assessment forms part of many of our pond maintenance and problem solving visits. This allows us to identify issues accurately and recommend appropriate solutions.


Koi Ponds, Filtration and Equipment

Why do koi ponds need specialist filtration compared to garden ponds?
Koi produce significantly more waste than goldfish or wildlife ponds, which places much higher demands on filtration and circulation. Without specialist filtration, water quality can deteriorate quickly, leading to health issues. Our Koi Pond Building service explains how koi ponds are designed correctly from the outset.


What type of filtration is best for koi ponds?
The best filtration system depends on pond size, stocking levels, and layout. Many koi ponds benefit from multi stage systems combining mechanical and biological filtration. Options include drum filters, pressure filters, and flow through systems. Our An In Depth Guide to Drum Filters for Koi Ponds explains how modern drum filters work and when they are most suitable.


What is the difference between drum filters and pressure filters?
Drum filters provide automated mechanical filtration and are ideal for heavily stocked koi ponds, while pressure filters are more compact and suitable for smaller systems. Our article on How do Pressurised Pond Filters Work? explains the differences and where each type works best.


Can my existing koi pond filtration be upgraded?
In many cases, yes. Older systems are often undersized or inefficient. Upgrading filters, pumps, or UV units can dramatically improve water clarity and stability without rebuilding the pond. Our Pond Filters, Pumps and Upgrades page explains how these upgrades are handled.


What is a Nexus filter and is it suitable for koi ponds?
The Nexus range is a popular biological filter designed specifically for koi ponds. It combines mechanical separation with moving bed biological filtration. Our Evolution Aqua Nexus Filter Guide explains how these systems work and where they are best used.


What filtration options are available to buy directly?
We supply a wide range of koi pond filtration systems through our online shop, including drum filters, pressure filters, bead filters, and flow through filters. These can be viewed in our Pond Filters, Drum Filters, and Pressure Filters categories.


What pumps are suitable for koi ponds?
Koi ponds require reliable, correctly sized pumps to ensure consistent flow through filtration systems. Energy efficient pumps are particularly important for systems that run continuously. Suitable options can be found in our Pond Pumps and Variable Flow Pumps categories.


Can pumps and filters be oversized for future proofing?
Yes. Designing systems with future growth in mind is often sensible, particularly for koi ponds where stocking levels may increase over time. Oversizing filtration generally adds stability rather than causing problems.


Do koi ponds need additional aeration?
Yes. Koi ponds almost always benefit from additional aeration to support fish health and biological filtration. Aeration improves oxygen levels and helps beneficial bacteria thrive. Suitable equipment can be found in our Air Pumps category.


How important is UV clarification in koi ponds?
UV clarifiers help control green water by targeting suspended algae. While UV alone does not fix underlying water quality issues, it plays an important role in maintaining clear water when used alongside proper filtration.


Can koi ponds be heated?
Yes. Heating is often used to maintain stable temperatures during colder months, reducing stress and supporting fish health. Our Pond Heating Guide explains when heating is beneficial and how it should be used.


What feeding practices are best for koi ponds?
Feeding should be adjusted based on water temperature and fish activity. Overfeeding is a common cause of water quality issues. Our What to Feed Koi in Winter guide explains how feeding changes during colder periods.


Can poor filtration affect koi behaviour?
Yes. Poor water quality caused by inadequate filtration can lead to stress related behaviours such as hiding, flashing, or reduced feeding. Understanding behaviour is key to early problem detection. Our Understanding Koi Behaviour guide explores this in more detail.


Do you install and maintain koi pond equipment?
Yes. We supply, install, and maintain koi pond filtration systems, pumps, aeration, and associated equipment. We also provide ongoing maintenance to ensure systems continue to perform correctly.


Pond Relining and Fibreglassing

How do I know if my pond liner needs replacing?
Common signs include unexplained water loss, visible liner damage, brittle or shrinking liners, and ponds that struggle to hold a consistent water level. Older liners and poorly installed liners are particularly prone to failure. In many cases, replacement is the most reliable long term solution, which is explained in more detail on our Pond Relining and Repairs page.


Do you provide pond fibreglassing services across all counties?
Yes. Our professional onsite pond fibreglassing service is available across the South East and East of England. We regularly carry out fibreglass pond lining projects in Pond Fibreglassing in Kent, Pond Fibreglassing in Surrey, Pond Fibreglassing in Sussex, Pond Fibreglassing in Essex, Pond Fibreglassing in Hertfordshire, Pond Fibreglassing in Buckinghamshire, Pond Fibreglassing in Bedfordshire, Pond Fibreglassing in Suffolk, and Pond Fibreglassing in Norfolk.


Is fibreglass better than a liner for ponds?
Fibreglass provides a seamless, rigid, and highly durable finish that does not crease or tear. It is particularly well suited to koi ponds and formal water features where long term reliability matters. Liners can still be suitable in certain situations, depending on pond type and construction. We explain the differences fully in our Fibreglass vs Liner guide.


What types of ponds are suitable for fibreglassing?
Most ponds can be fibreglassed, including koi ponds, formal ponds, raised ponds, and refurbishment projects. The key requirement is a sound structure that can be properly prepared. Our What is Fibreglass? page explains where fibreglass is most effective and when it may not be the best option.


Can an existing liner pond be converted to fibreglass?
Yes. Many liner ponds can be converted to fibreglass by removing the liner, preparing the structure, and rendering the pond before fibreglassing. This creates a solid, seamless bowl that is ideal for fibreglass application. The full process is explained in our Converting a Liner Pond to a Fibreglass Pond guide.


How is a pond prepared before fibreglass installation?
Preparation is critical to the success and lifespan of a fibreglass finish. This typically involves cleaning the pond, repairing any defects, and rendering the structure to create a smooth and stable surface. Our How to Prepare Your Pond for Fibreglass Installation guide explains this stage in detail.


How is fibreglass actually installed?
Fibreglass is applied in layers using resin and glass matting to create a seamless waterproof lining. Correct application, curing conditions, and attention to detail are essential to ensure long term performance. We walk through the full process in our How is Fibreglass Installed? guide.


How long does fibreglass pond lining last?
When installed correctly, fibreglass pond linings can last for decades with minimal maintenance. Longevity depends on preparation, installation quality, and general pond care. We explain how to maximise lifespan in The Lifespan of a Fibreglass Pond and How to Extend It article.


Is fibreglassing disruptive and how long does it take?
Fibreglassing does involve draining the pond and temporary disruption, but the process itself is structured and efficient. Most projects are completed within a clearly defined timeframe, and once finished, the pond requires far less ongoing maintenance than a liner pond.


Can fibreglass be repaired if it becomes damaged?
Yes. While fibreglass is extremely durable, localised repairs can be carried out if damage occurs. Addressing any issues early helps prevent further problems and maintains the integrity of the lining.


Is fibreglass suitable for wildlife ponds?
Fibreglass can be used for wildlife ponds, but it is not always the most appropriate option. In some cases, liners or more natural finishes may be better suited. We always assess each pond individually and recommend the most suitable solution rather than forcing a particular method.


Do you carry out fibreglassing all year round?
Yes. Fibreglassing can be carried out throughout the year, provided weather conditions allow for correct curing. We plan work carefully to ensure a high quality finish regardless of season.


Do you recommend DIY fibreglassing?
Fibreglassing is a specialist process that requires correct preparation, materials, and application. DIY fibreglassing often leads to premature failure or costly repairs later on. Our The Differences Between DIY Fibreglassing and Hiring a Professional guide explains why professional installation is usually the better long term option.


Can fibreglassing be combined with filtration upgrades?
Yes. Many customers choose to upgrade filtration, pipework, or bottom drains while the pond is drained for fibreglassing. This can be a cost effective way to modernise the entire system. Our Pond Filters, Pumps and Upgrades page explains how these upgrades are typically handled.


Do you guarantee fibreglass pond linings?
We carry out fibreglassing to a professional standard and are transparent about what can and cannot be guaranteed depending on pond structure and usage. This is always discussed clearly before work begins.


Large Ponds, Lakes and Water Treatments

Do you work on large ponds and lakes as well as garden ponds?
Yes. In addition to garden ponds, we regularly work on large ponds, estate lakes, fishing lakes, and commercial waterbodies. These systems require a different approach to small ponds due to their scale, water volume, and surrounding environment. Our Large Pond and Lake Services cover everything from one off interventions through to long term management.


How often do large ponds and lakes need maintenance?
Maintenance requirements vary depending on size, planting, and surrounding land use. Some waterbodies benefit from annual intervention, while others require seasonal or ongoing management. Regular maintenance helps prevent excessive silt build up, invasive plant growth, and water quality issues.


What causes excessive silt build up in lakes and large ponds?
Silt accumulates over time from decaying plant matter, leaf litter, runoff, and organic waste entering the water. Left unmanaged, this reduces depth, affects water quality, and encourages weed growth. Targeted silt removal and dredging can restore depth and improve long term pond health.


Do large ponds and lakes always need dredging?
No. Dredging is only required where silt build up has significantly reduced depth or water quality. In many cases, plant management, debris removal, or water treatments can achieve good results without the need for full dredging. Each site is assessed individually before any recommendation is made.


What types of plants commonly cause problems in lakes?
Invasive and fast growing species such as reed mace, duckweed, and blanketweed can quickly dominate large ponds and lakes if left unmanaged. Regular monitoring and plant management help maintain balance and prevent these species from taking over.


What causes algae problems in lakes and large ponds?
Algae growth is usually driven by excess nutrients entering the water from leaf litter, runoff, fertilisers, or decaying organic matter. Treating algae alone rarely solves the problem. Addressing nutrient levels and overall water balance is key to long term improvement.


What are lake and pond water treatments designed to do?
Water treatments are used to stabilise water parameters, bind excess nutrients, improve clarity, and reduce the conditions that lead to algae blooms. They are most effective when used as part of a broader management approach rather than as a one off fix. Our Oase Lake Therapy service focuses on addressing these underlying causes.


Are water treatments safe for fish and wildlife?
Yes, when applied correctly. Professional water treatments are designed to improve water quality while supporting fish, invertebrates, and surrounding wildlife. Treatments are selected carefully based on the specific conditions of each waterbody.


Can lake treatments be used alongside mechanical equipment?
Yes. Water treatments work alongside equipment such as skimmers, aerators, and filtration systems. Treatments help address water chemistry and nutrients, while equipment manages debris, circulation, and oxygen levels.


Do large ponds and lakes benefit from aeration?
Yes. Aeration improves oxygen levels, supports beneficial bacteria, and helps prevent stagnant conditions. Many large ponds and lakes benefit from dedicated aeration systems, particularly during warmer months or where water depth is significant.


Do you provide ongoing lake management plans?
Yes. Many of our large pond and lake clients are managed on an ongoing basis with scheduled visits and seasonal works. This proactive approach helps maintain water quality, control plant growth, and reduce the need for major interventions later on.


Can lake services be combined with pond maintenance or upgrades?
Yes. Larger sites often benefit from a combination of services, including maintenance, equipment upgrades, and water treatments. Combining services allows for a more effective and joined up management approach.


Do you work on natural swimming ponds and water features?
Yes. Natural swimming ponds and larger decorative water features require careful water quality management to remain safe and visually appealing. We assess these systems individually to recommend appropriate treatments and maintenance methods.


How do I know if my lake or large pond needs professional attention?
Signs include persistent algae blooms, excessive weed growth, unpleasant odours, reduced water clarity, or visible silt build up. Early intervention is usually more cost effective than leaving issues to escalate.


How do I get started with large pond or lake services?
The first step is to discuss the size, history, and current condition of the waterbody. From there, we can recommend a suitable plan, whether that involves one off work or ongoing management.


Choosing That Pond Guy

Why should I choose That Pond Guy over a general pond cleaner or landscaper?
Ponds are complex systems involving water chemistry, filtration, electrics, structural integrity, and fish welfare. A general landscaper or cleaner may focus on appearance alone, whereas we specialise exclusively in ponds and water features. This allows us to identify underlying issues early and provide solutions that last, rather than short term fixes.


Do you specialise in ponds full time?
Yes. Pond care is not an add on service for us. We work exclusively with ponds, lakes, and water features, carrying out pond cleaning, maintenance, fibreglassing, filtration upgrades, koi pond construction, and lake management throughout the year.


What makes your approach different from other pond companies?
We take a joined up approach to pond care. Rather than treating individual symptoms, we look at the pond as a complete system. This means considering structure, filtration, stocking levels, water quality, planting, and long term maintenance together, so problems do not simply return.


Do you work on complex or problem ponds?
Yes. Many of the ponds we are asked to work on have ongoing issues that have not been resolved elsewhere. This may include persistent water quality problems, failing liners, poor filtration design, or long neglected ponds. These types of projects are a large part of what we do.


Can you show examples of your previous work?
Yes. We document a wide range of projects, from small garden ponds through to large estate lakes and bespoke koi ponds. These examples demonstrate the quality and variety of work we carry out and the results that can be achieved.


Do you receive repeat work and long term clients?
Yes. A large proportion of our work comes from repeat customers and long term maintenance clients. This includes private homeowners, estates, schools, and organisations who rely on us to manage their ponds on an ongoing basis.


Are you transparent about what work is needed?
Yes. We are always honest about what is required and what is not. If a repair, clean, or upgrade is not worthwhile, we will say so. Our aim is to provide solutions that make sense long term, not to oversell unnecessary work.


Do you work with both small ponds and large lakes?
Yes. We work across a wide range of pond sizes, from small ornamental and wildlife ponds through to large ponds, lakes, and complex multi system installations. This breadth of experience allows us to adapt our approach to suit each site.


Are you properly insured and professional?
Yes. We are fully insured for all pond care, construction, and lake management works. We operate professionally, safely, and with respect for each site we work on.


Will you explain what you are doing and why?
Yes. We believe informed customers make better decisions. We are always happy to explain the reasoning behind our recommendations, how systems work, and what can be done to keep a pond healthy going forward.


Do you offer ongoing support after work is completed?
Yes. Many customers choose to move onto regular maintenance after a clean, upgrade, or rebuild. Ongoing care helps protect the work carried out and keeps the pond in good condition long term.


Pricing, Timescales and Booking

How much do your pond services cost?
The cost of pond services varies depending on the size of the pond, its condition, the type of work required, and access. A small garden pond clean will be very different to a large koi pond or lake management project. We always assess the pond properly before providing a clear and realistic price.


Do you offer fixed prices or estimates?
For many services, we are able to provide fixed prices once we understand the scope of work. In some cases, particularly for larger or more complex ponds, an initial visit may be required before confirming a final price.


Do you offer free advice or quotations?
Yes. We are always happy to discuss your pond, look at photos, and offer honest advice before any work is booked. This helps ensure the recommended service is appropriate and cost effective.


How far in advance do I need to book?
Availability can vary depending on the time of year and the type of work required. Routine maintenance and cleaning can often be booked within a shorter timeframe, while larger projects such as fibreglassing or pond builds may require more notice.


How long does most pond work take?
Many pond cleaning and maintenance jobs are completed within a day. Larger works such as fibreglassing, relining, or filtration upgrades may take several days depending on complexity. We always explain expected timescales clearly before work begins.


Will my pond be out of action during the work?
Some services, such as fibreglassing or major relining, do require the pond to be drained temporarily. Where fish are present, they are safely housed during this period. We always aim to minimise disruption and return the pond to use as efficiently as possible.


Do you remove fish during works, and are they safe?
When fish need to be removed, they are temporarily housed in filtered and aerated holding systems. Fish welfare is a priority, and care is taken to minimise stress throughout the process.


Can work be carried out during winter?
Yes. Many pond services can be carried out all year round. Winter is often a good time for cleaning, repairs, and upgrades before spring growth begins. We adjust methods where necessary to account for colder conditions.


Do you work on ponds that have been neglected for years?
Yes. Some of the ponds we work on have not been touched for many years. While these ponds often require more intensive work initially, they can usually be restored and made far easier to maintain going forward.


Do you guarantee your work?
All work is carried out to a professional standard, and we are clear about what can and cannot be guaranteed depending on the service and pond structure. This is always discussed openly before work begins so there are no surprises.


Are you insured to carry out pond works?
Yes. We are fully insured for pond cleaning, maintenance, construction, fibreglassing, filtration upgrades, and lake management works, including work on larger and commercial sites.


Can services be combined to save time or cost?
Yes. Many customers choose to combine services, such as carrying out filtration upgrades during a pond clean or improving pipework during fibreglassing. Combining works can often be more efficient and cost effective.


Do you offer ongoing maintenance after major works?
Yes. Many customers choose to move onto regular maintenance after a pond clean, reline, or upgrade. This helps protect the investment and keeps the pond in good condition long term.


How do I get started or request a quote?
The easiest way to get started is to get in touch and tell us a little about your pond. Photos are always helpful, and from there we can recommend the next steps.