Their unique specification and design ensures a high efficiency unit at an affordable price. They are made from UV stabilised materials to ensure a longer life and incorporate turbulators to enhance the unit’s performance. Large inlet and exhaust ports ensure they have the best possible flow rates, making them suitable for a wide range of applications. 11w Algae Master For use in ponds up to 6750 litres Hosetail size 12-38mm Cable 10m   15w Algae Master For use in ponds up to 9000 litres Hosetail size 12-38mm Cable 10m   25w Algae Master For use in ponds up to 16625 litres Hosetail size 12-38mm Cable 10m   30w Algae Master For use in ponds up to 20250 litres Hosetail size 12-38mm Cable 10m   55w Algae Master For use in ponds up to 27000 litres Hosetail size 12-38mm Cable 10m