Pumice Natural Biologic Aquarium Filter Media
Our premium grade aquarium pumice is perfect to use in an aquarium filter to add additional biologic filtration. Pumice is an all-natural product which is inert, won't alter pH, and offers a very large surface area for beneficial bacteria. Simply place the contents into a mesh filter bag, rinse in a bucket of aquarium water or under the sink, and add to your aquarium filter. Each bag contains 12 oz of pumice and is capable of filtering up to a 30 gallon aquarium. Compare to Seachem Matrix.