Bacto-Surge® Biological Action Filters are air-driven sponge filters (air pump not included see aquarium air pumps for more) which offer superior mechanical and biological filtration of your aquarium water. The highly porous sponge contains extreme surface area and thousands of microscopic pores where aerobic bacteria, hydrated with oxygenated water, can grow and flourish.
This sponge filter is rated up to 125 gallon aquarium.
Great For Use In Freshwater Or Marine Applications
- Highly porous sponge maximizes bacterial action
- Increased surface area offers maximum bacteria colonization
- Soft sponge material is easily cleaned
- Polyether foam for longer life
- Uplift tube and air diffuser combination provide maximum lift and won't easily clog
- Other uses: polishing filter for canister filter applications, hang on filter applications or uplift tubes of undergravel filters.
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