EasyPro 3" Bottom Drains Diffuser Option:With Air Diffuser your water feature will be

your water feature will be ornamented by a clear stream

Ascorbic Acid

Denitrifying bacteria that convert nitrates to completely harmless nitrogen gas

Includes 2 HP Media Agitator and spring check valve

EasyPro 3" Bottom Drains Diffuser Option:With Air Diffuser your water feature will beMany pond builders have found that adding a bottom drain helps keep a pond cleaner. Fish waste and other muck that accumulates on a pond bottom can be easily removed by a bottom drain. These 3" bottom drains have dual rubber gaskets and 6 stainless screws for watertight penetration through liner. Optional air diffuser in lid increases circulation and cleaning capacity. For use with 3" Schedule 40 PVC fittings and pipe Optional air diffuser has 1 2"