Boyu YT-6000 Bio Filter is a complete all-in-one biological box filtration system designed for small to medium fish ponds of up to 6000 litres. Supplied with a 25W pump delivering 1500 litres per hour, a built-in 9W UV steriliser that eliminates harmful bacteria and algae, multi-stage foam filtration media and all necessary hoses and fittings, the YT-6000 is a ready to install pond water purification system that gives Nigerian fish farmers crystal clear, biologically healthy pond water with minimal effort.