Remove ammonia and nitrites from the water effectively with a sponge filter or other trickling filter. Sponge filters work well for small ponds and fish holding tanks, serving as the base on which helpful bacteria can grow. At Pentair Aquatic Eco-Systems, we offer large aquarium sponge filters, as well as sponge refills and filter floss, which can be used as a biofilter media.
Sponge filters are popular due to their simplicity, affordability, and ease of use. Depending on the exact filter type, the filter sponge is typically easy to remove and clean (or replace) as needed. Please note that some filters must be weighted down so that they stay submerged under the water and also may require air to operate correctly. Please call our helpful and knowledgeable team at 877-347-4788 if you have any questions about sponge filters for aquariums and other systems.