Oase LevelControl Auto top-up system

Oase LevelControl Auto Top Up System

Automatic Water Level Management for Ponds and Water Features

Maintaining a stable water level is essential for both visual appearance and filtration performance. The Oase LevelControl Auto Top Up System provides a fully automatic and reliable solution for keeping ponds, koi ponds, fountains and reservoirs at a consistent depth.

Manufactured by Oase, this electronically controlled system continuously monitors water levels and adds fresh mains water when required. A partially submerged conductive sensor detects changes in water depth and communicates directly with the control unit. When the water level falls below the sensor setting due to evaporation, splash out or routine filter cleaning, the controller opens the supplied solenoid valve and allows water to enter the system.

Once the correct level is restored, the unit immediately closes the valve. This helps maintain the selected level and reduce unnecessary water usage when correctly installed and maintained. This automated process reduces the need for manual top ups and helps maintain consistent operating conditions throughout the year. For pond use, provide an overflow. Any connection to drinking water needs a free-flowing outlet, and the solenoid valve is not a safety valve.

Suitable for Gravity Fed and Pump Fed Systems

The Oase LevelControl is particularly well suited to gravity fed pond systems. In these installations, even small fluctuations in water level can affect skimmer performance, bottom drain efficiency and filter stability. Therefore, maintaining a constant water height helps protect pumps and supports balanced circulation.

However, it is equally valuable on pump fed ponds, especially those running drum filters. During each automatic cleaning cycle, drum filters discharge waste water to drain. Over time, this regular flushing can gradually lower pond volume. By installing an automatic top up system, water lost during rinse cycles is replaced automatically, ensuring stable water levels without constant supervision.

Koi ponds benefit significantly from this consistency. In warm weather, evaporation can reduce levels quickly. In addition, backwashing and drum cleaning remove water daily. The LevelControl compensates for these changes immediately.

Decorative fountains and commercial water displays also rely on stable water levels. Many fountain nozzles require precise depth to maintain the correct spray pattern. Consequently, consistent topping up ensures visual performance remains unchanged.

The IP44 controller must be protected from flooding and direct sunlight. For outdoor installation, Oase requires a qualified electrician, a residual-current device rated at no more than 30 mA and the power pack at least 2 m from the water. However, the solenoid valve must be fitted in a splash protected location to ensure long term reliability.

With very low power consumption of approximately 3 watts, the system operates efficiently and economically.

Key Benefits

• Automatically maintains a stable pond water level
• Particularly suitable for gravity fed filtration systems
• Protects pumps and filters from running dry
• Ideal for koi ponds, fish ponds and fountains
• 20 mm nominal switching differential; the sensor can be shortened for 10 mm
• Low energy consumption of approximately 3 watts
• IP44 controller; install as directed and protect from flooding and direct sun
• Reduces manual maintenance and monitoring

Technical Specifications

• Sensor type: Conductive water level sensor
• Switching differential: 20 mm nominal; 10 mm if the sensor is shortened
• Electrical supply: use the supplied Oase transformer and follow the component ratings in the manual
• Solenoid valve: 1 inch BSP male threaded inlet and outlet
• Maximum operating pressure: 10 bar
• Sensor cable length: 3 metres
• Solenoid cable length: 3 metres
• Mains power cable length: 2 metres
• Power consumption: approximately 3 watts
• Protection: IP44 controller; protect from flooding and direct sunlight and follow Oase’s installation instructions
• Guarantee: 2 years

Choosing the right pump setup

When choosing a pond pump, the number on the box is only the starting point. Real flow is affected by head height, pipe length, bends, hose diameter, valves, UV units and the filter it is feeding. A pump that looks powerful on paper can lose a lot of performance if it is pushed through undersized hose or a restrictive run of fittings.

For best results, plan the pump, filter, UV and return pipework together. Use larger bore hose or pressure pipe where possible, keep bends sensible and leave enough access to remove the pump for cleaning. This gives the equipment a better chance of delivering the flow the pond actually needs.

Maintenance and compatibility checks

It is worth checking the supporting parts at the same time as the main product. Hose size, pressure pipe, valves, unions, UV units, filter inlets, air manifolds, spares and cleaning access can all affect how well the final system works. A correctly matched installation usually performs better and is easier to maintain than one built from parts chosen separately.

Plan this product around the full pond or water feature layout, including access for maintenance, compatible fittings and the equipment it connects to. Checking the installation before ordering helps avoid mismatched parts and makes future servicing easier.

Setup notes

Helpful links and compatible products

Use these links to plan the rest of the system around this product. The right pump, pipework, UV, media or spares will make the installation easier to set up, maintain and service.

• View the full Oase range
• Oase control and garden control accessories
• Automatic water top up systems
• Browse Oase pond equipment

More useful ranges and guides

These related ranges and guides may help you compare options, choose the right accessories and plan the full pond system rather than viewing this product in isolation.

• Browse pond filters
• Browse pond pumps
• Browse pond UV clarifiers
• Standard flexible pond hose