Grech CPF-2500 Pond Bio Pressure Filter UVC 13-watt Up to 1600 Gallons Biological and mechanical filter chambers for more efficient removal of dissolved and solid waste Simple quick handle cleaning system for easy maintenance (no need to open and clean foams all the time) Enables rapid growth of aerobic bacteria resulting in removal of lethal ammonia and nitrite Able to cope with higher water flows compared to traditional gravity filters Complete with inlet and outlet hose adapters