Pond Cleaning Services
Professional Pond Cleaning Across Kent, London, Essex, Surrey & Sussex
Keeping your pond clean is essential for clear water, healthy fish, and a pond that is easy to enjoy and maintain. Over time, sludge, debris, and organic waste naturally build up, putting strain on filtration systems and affecting water quality if left unchecked.
At That Pond Guy, we provide professional pond cleaning services for garden ponds, koi ponds, wildlife ponds, and larger water features across Kent, London, Essex, Surrey, and Sussex. Every pond is different, so our approach is always tailored to the pond’s size, condition, fish stock, and filtration setup. Whether your pond needs a full deep clean, targeted maintenance, or seasonal care, we focus on improving water quality while keeping fish safe and minimising disruption.
Our experienced team handles the entire process from start to finish, helping restore balance, improve clarity, and make ongoing pond care far easier.
Our Pond Cleaning Process
A full pond clean is like a reset for your pond. We work carefully and methodically to restore water quality while keeping disruption to a minimum.
What’s Included in Our Pond Cleaning Service?
Fish Care and Temporary Holding
Your fish are safely transferred into aerated holding tanks, keeping them calm and protected while we work. We also carry out a visual health check to identify any signs of stress or illness.
Pond Draining and Deep Cleaning
The pond is fully drained to allow sludge, debris, and algae to be removed. All surfaces are carefully jet washed to leave the pond clean without damaging liners or fibreglass finishes.
Pump and Filter Cleaning
Pumps, filters, and pipework are thoroughly cleaned and checked to ensure they are working efficiently. Where required, we can also advise on upgrades to improve performance or reduce running costs.
Aquatic Plant Maintenance
Overgrown plants are trimmed, repotted, or repositioned to prevent excessive debris build up and to keep planting balanced and manageable.
Water Treatment and Refill
Once the pond is refilled, a dechlorinator is added to make tap water safe, along with beneficial bacteria to support healthy biological filtration.
Final Checks and Fish Reintroduction
When water conditions are stable, fish are carefully returned to the pond. We carry out final checks to ensure everything is running correctly before leaving site.
We offer pond cleaning services throughout the year and can provide seasonal advice to help keep your pond in good condition between visits.
Additional Services Available for Pond Cleaning in Kent, London & Beyond
Alongside our comprehensive pond cleaning service, we also offer:
- Leak Detection & Repair – Find and fix leaks to prevent ongoing water loss.
- Pump & Filter Upgrades – Improve efficiency with modern, energy-saving systems.
- Blanketweed Treatment – Combat algae growth with effective treatments.
- Jet Washing Surrounding Areas – Restore the look of pond edges and surrounding patios.
Why Choose That Pond Guy?
We are trusted by over 400 customers across the South East, with more than 400 five star reviews from pond owners who value clear communication, careful workmanship, and reliable results.
Our team has years of hands on experience in pond cleaning, maintenance, and fish care. Every pond is treated individually, with the time and attention needed to do the job properly.
Our pond cleaning services start from £250 + VAT, with each job individually priced based on pond size, condition, access, and requirements. There are no hidden charges, and we are always happy to explain exactly what is involved before work begins.
Service Areas
We provide professional pond cleaning services across Kent and London, working with pond owners in a wide range of towns, villages, and boroughs throughout the South East.
If you are based in Kent, you can explore our dedicated pond cleaning services in Kent page, which includes detailed information for towns such as Maidstone, Sevenoaks, Tunbridge Wells, Tonbridge, Canterbury, Ashford, Dartford, Gravesend, and surrounding areas.
For customers within the capital, our pond cleaning services in London page covers all London boroughs, including South London, North London, West London, East London, and Bexley borough, with area-specific pages available for more local information.
In addition to Kent and London, we also provide pond cleaning services across parts of Essex, Surrey, and Sussex as part of our wider South East coverage. If you are unsure whether we cover your location, please get in touch and we will be happy to advise.
Before & After Results
We take pride in transforming ponds from murky and overgrown to clear, healthy, and easy to maintain. Below you can see before, during, and after images from recent pond cleaning projects. You can also visit our Instagram page to view our latest work and ongoing projects.
Professional Pond Cleaning – Frequently Asked Questions
How often should a pond be professionally cleaned?
Most ponds benefit from professional pond cleaning once per year, sometimes supported by lighter maintenance visits. The ideal frequency depends on factors such as pond size, fish stock, planting levels, filtration quality, and how much debris enters the pond. During a professional clean, we can advise on a realistic schedule that keeps your pond clear, healthy, and easy to manage long term.
When is the best time of year to have a pond professionally cleaned for best results?
Spring is often the most popular time for a professional pond clean, as it removes winter debris and prepares the pond for increased fish activity and plant growth. However, pond cleaning can be carried out at most times of the year depending on the pond’s condition. We adjust our approach throughout the seasons to protect fish and avoid unnecessary disturbance.
Can pond cleaning be carried out during winter?
Yes, and in many cases winter pond cleaning can be very beneficial. During colder months, ponds have less biological activity, making it an ideal time to remove debris, sludge, and blockages without triggering algae growth. Winter cleans are typically more targeted, focusing on essential maintenance, filter care, and improving water quality while keeping disturbance to fish to an absolute minimum.
What is included in a professional pond cleaning service?
A professional pond clean is a complete process designed to improve water quality while keeping fish safe. This usually includes removing sludge and debris, cleaning key pond surfaces where appropriate, checking and cleaning pumps and filters, tidying plants, refilling the pond, and using fish safe treatments such as dechlorinator and beneficial bacteria where required. Every pond is assessed individually so the approach is always tailored.
Is pond cleaning safe for fish?
Yes. Fish safety is a priority throughout the cleaning process. Fish are handled carefully and, where required, temporarily placed into aerated holding tanks while work is carried out. We minimise stress, monitor conditions at all times, and ensure the pond system is stable and running correctly before fish are returned.
Do you have to drain the pond to clean it properly?
Not always. Some ponds only require a partial drain or targeted maintenance clean. A full drain is usually only necessary where there is heavy sludge build up, ongoing water quality problems, or a need to inspect the liner or fittings. The safest and most effective method is chosen once the pond has been assessed.
How long does a professional pond clean take?
The time required depends on the size of the pond, its condition, access, and the filtration setup. Smaller garden ponds can often be cleaned in a few hours, while larger or heavily neglected ponds may take most or all of a day. We always aim to provide a realistic time estimate before work begins.
Why is my pond water cloudy and how do you fix it?
Cloudy pond water is commonly caused by suspended debris, algae blooms, poor circulation, or filtration that is undersized or overdue maintenance. In most cases, the issue can be resolved with a proper pond clean, filter and pump checks, and appropriate water treatment. We also assess system setup to help prevent the problem returning.
Why is my pond water green and can it be sorted?
Green water is usually caused by microscopic algae thriving on excess nutrients and sunlight. It can often be improved by cleaning the pond, servicing the filtration system, and ensuring the UV clarifier is working correctly. We also advise on longer term solutions to help keep water clear and balanced.
What are the signs that a pond needs a professional clean?
Common signs include cloudy or green water, unpleasant smells, visible sludge on the bottom, blocked filters, reduced water flow, excessive algae, or fish behaving differently. If your pond never seems to stay clear for long or has become difficult to maintain, a professional clean usually makes a noticeable difference.
Will you clean and check my filter, pump and UV as part of the service?
Yes. As part of a pond clean, we clean and check pumps, filters, and pipework where accessible, and inspect UV clarifiers if fitted. If we identify any issues or equipment that is no longer suitable, we will explain this clearly and discuss the available options.
Can you remove pond sludge and debris from the bottom safely?
Yes. Removing sludge and organic waste is a key part of many pond cleans. This is done carefully to avoid unnecessary disturbance, while improving water quality and reducing nutrient build up that can contribute to algae and ongoing water problems.
How do I book a pond cleaning service?
To book a pond clean or request a quote, simply get in touch by phone, email, or through our contact page. Sharing a few photos and rough pond dimensions helps us provide more accurate advice before arranging the next step.
Additional Pond Cleaning Questions
How much does professional pond cleaning cost?
The cost of professional pond cleaning varies depending on pond size, condition, access, fish stock, and filtration setup. A lightly maintained garden pond will usually cost less than a heavily silted pond that requires sludge removal, fish handling, or equipment checks. We always assess each pond individually and provide clear advice before any work is booked.
Is it cheaper to clean a pond regularly rather than leave it?
Yes. Regular pond cleaning and maintenance is usually far more cost effective than leaving a pond until problems develop. Heavy sludge build up, blocked filters, poor water quality, and failing equipment often require more labour and remedial work. Routine cleaning helps prevent these issues and keeps ongoing costs lower.
Can pond cleaning help reduce algae problems long term?
Yes. A professional pond clean removes sludge, excess nutrients, and organic waste that algae feeds on. Combined with proper filtration, UV clarification, and correct stocking levels, cleaning plays a key role in long term algae control. We also advise on treatments and system improvements where needed.
Will pond cleaning damage beneficial bacteria?
No, when done correctly. We avoid unnecessary over cleaning and tailor our approach to the time of year and pond condition. In colder months especially, biological activity is already low, making cleaning less disruptive. Filters are cleaned carefully to retain beneficial bacteria wherever possible.
Do you clean wildlife ponds differently to koi ponds?
Yes. Wildlife ponds require a gentler approach focused on habitat protection rather than crystal clear water. Koi ponds typically require more thorough sludge removal, filtration cleaning, and water quality management. We adjust our cleaning method based on the type of pond and its purpose.
What happens to the waste and sludge removed from my pond?
All sludge, debris, and waste removed during cleaning is safely collected and disposed of responsibly. Where possible, organic waste can sometimes be reused elsewhere in the garden, but this depends on access and site conditions.
Can pond cleaning improve fish health?
Absolutely. Poor water quality is one of the most common causes of fish stress and illness. Removing waste, improving circulation, cleaning filters, and restoring water balance helps reduce stress and supports healthier fish long term.
Is jet washing always used during pond cleaning?
No. Jet washing is only used where appropriate and never aggressively. Some ponds benefit from light surface cleaning, while others only require sludge removal and equipment servicing. The method used always depends on pond condition, liner type, and fish welfare.
Can you identify leaks or liner problems during a clean?
Yes. Cleaning often reveals issues that are hidden by sludge or algae, such as liner damage, settlement problems, or failing fittings. If we find anything of concern, we explain it clearly and discuss repair options.
Do I need to be at home during the pond clean?
Not necessarily. As long as access has been agreed in advance, pond cleaning can usually be carried out while you are out. We are happy to talk through the process beforehand and update you once the work is complete.
How soon will my pond look clear after cleaning?
Most ponds look noticeably better immediately after cleaning. In some cases, water may take a short time to fully clear as fine particles settle and filtration catches up. We always aim to leave the system stable and improving, not just visually clean on the day.
Can pond cleaning be combined with upgrades or improvements?
Yes. Pond cleaning is often the best time to upgrade pumps, filters, UV units, or make small improvements such as pipework adjustments or plant reorganisation. This avoids duplicating labour and makes the most of the visit.
How do I keep my pond clean after a professional clean?
Simple steps like regular leaf removal, filter checks, correct feeding, and avoiding over stocking all help maintain results. After cleaning, we are always happy to give practical advice tailored to your pond.
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






