The JBL UniBloc Foam Pads are for use in the middle filter baskets within the JBL CristalProfi e external filters. Each pack contains a set of two high-quality medium-pore foam pads for effective biological filtration. The pads provide optimum colonisation conditions for cleansing bacteria. The pads have a section in the centre which can be removed to be replaced with filter material to treat special problems if required. For Clean and healthy water Biological filter foam For use in the middle filter baskets of the CristalProfi e Filters Centre section can be removed to make way for special filter materials Pore size especially suited for bio-filtering Each pack contains 2 x 25ppi pads
