Oase BioTec Screenmatic² Replacement Filter Foam 18000 / 24000 / 38000 Flow Rate at 10 Feet of Head_1828 GPH The simple-to-use self-cleaning feature allows

The simple-to-use self-cleaning feature allows for the unit to be backwashed in less than five minutes without opening the canister or getting your hands dirty

This proven blend of beneficial bacteria and cold water strains are dosed specifically for cold water applications in the Spring and Fall

If pH is below 7

CF23E Eco-Series Spillway 23" Wide 4″ diffuser tube lays across the bottom of the spillway in between the inlet fittings

Uses only 100 watts of energy

Oase BioTec Screenmatic² Replacement Filter Foam 18000 / 24000 / 38000 Flow Rate at 10 Feet of Head_1828 GPH The simple-to-use self-cleaning feature allowsAvailable: Purple & Red Foam for 18000 38000 OASE Purple & Red Filter Foams for BioTec ScreenMatic2 18000 (model # 42975) Requires 3 sets for full filter replacement Also fits BioTec ScreenMatic2 38000 (model # 42976) Requires 7 sets for full filter replacement Blue Foam for 18000 38000 OASE Blue Filter Foams for BioTec ScreenMatic2 18000 (model # 42975) Requires 1 set for full filter replacement Also fits BioTec ScreenMatic2 38000 (model # 42976)