REPLACEMENT SPONGE FILTER BOB 2ST
Bio-sponge filter Simple to replace Two extra/spare sponges Description: The internal BOB sponge filter is equipped with a pump that sucks in water. This results in a larger capacity than an air-driven sponge filter. This has the great advantage that more water is filtered and that there is greater flow in the aquarium. Because of the fine sponge, this double sponge filter is 100% safe, even for shrimp. It removes even the smallest particles of dirt from the water.