The Fish Mate Powerclenz Bio Filters offer a range of versatile three stage mechanical and biological filtration systems. Models included the Fish Mate 10000, 15000, 30000 and 45000 and all include an amazing clear water guarantee.As a pressurised pond filter it is suitable for installation both above and below ground level, giving you real versatility when it comes to installation.While the mechanical filtration of the sponge pads catch large particles and algae clumps the Supra biological media allows the growth of beneficial bacteria, to remove nitrite and ammonia from the pond, whle built in UV clarifer ensures algae is destroyed,Operation of the ‘Powerclenz’ automatic cleaning system allows quick and easy cleaning of the filter by simply turning a dial. As the dial is turned the filter foam is squeezed by highly pressurised water, allowing pond sludge to be discharged to waste