Bacto-Surge Biological Action Filters are air-driven sponge filters (air pump not included) 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.
Features:
- 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.
A mechanical & biological filter for:
- Nano Tanks
- Smaller FW Aquariums
- Breeding Environments
- Fry Holding Tanks
- Quarantine Applications
- Use with Slow Moving Fish Like Discus
- Polishing of Marine Aquariums
Specifications:
- Small
- Up to 40 gallons
- Foam size: 2" H x 4.75" D
- Large
- Up to 75 gallons
- Foam size: 4" H x 4.5" D
Use:
Follow directions on package and attach to an air pump of sufficient size to provide outstanding air-driven filtration