This 4in1 Multifunctional Sponge is suitable for use with Sobo's Canister External Filter SF-650SF, SF-850F, & SF-1000F.
- High Quality Wither Filter Wool
- Super Activated Carbon Sponge
- Ammonia Reduction Filter Sponge
- Phosphate Reduction Filter Sponge
- To ensure a high level of filtration, regular cleaning and subsequent replacement of the sponge is recommended every 60 days.
