Oase ProfiClear Premium Compact Biological Filters - Gravity Fed Replacement Part The Arctic Blend is not

The Arctic Blend is not just nitrifying bacteria (which goes dormant during winter)

making it safe for fish and all aquatic life

Before the controller

Hy-Drive 4000

Creates smooth

Oase ProfiClear Premium Compact Biological Filters - Gravity Fed Replacement Part The Arctic Blend is notOase Profi Clear Premium Compact gravity fed filters are innovative biological filters that combine technological features for highly effective biomass filtration and low maintenance. Water flows through the integrated sieve screens, which filter out debris as small as 60 microns. The drum is fully self cleaning with a built in 87psi high pressure cleaning pump. Dirt and debris is regularly removed through the 4" waste discharge outlet. The filtered