Hagen Biofoam Replacment Foam - For Hagen Biofoam filter - 2 pieces blister paqcked on card
The ELITE replacement sponges are specifically designed for Art. #A-900 A-902 ELITE sponge filters. To maintain effective biological filtration it is recommended to rinse the foam filter in water taken from the aquarium. For model A-902 double sponge filter alternately replace sponges when necessary, this will maintain the proper biological balance in the aquarium.