- Box contents: 1 foam
- Filter Foam For The EasyCrystal Filter 250 and EasyCrystal FilterBox 300 for the intensive biological filtration for clean crystalline water.
- Biological filtration: filter sponge with a lot of surface area for the colonisation of friendly bacteria grid frame used to facilitate the replacement of the filter foam biofoam
E’cryst’Filter Biofoam 250/300