Hydra Aquatics’ new Sponge Filter connects an air pump to the filter for water current and to initiate filtration and bacterial colonization of the sponge and media. It features both a sponge and ceramic media producing an enormous surface area for nitrifying bacteria in a compact filter. By facilitating the breakdown of ammonia, nitrites, and other harmful substances, your tank will remain healthy and thrive. Its mechanical filtration traps debris for easy cleaning and maintenance. This sponge filter is excellent for planted, shrimp, saltwater quarantine, or species tanks like discus, guppies, cichlids.