ITEM NAME:50 Pcs Aquarium Pond Bio Balls 16mm Canister Filter Media Marine Reef Sump Fish Descriptio n Features: 1.The bio-sponge inside provide more surface area for growth of beneficial Bio-Spira bacteria 2.BIO-Balls do not require replacement unless damaged or destroyed 3.In the event of excessive buildup, you may gently rinse with water from an established aquarium, if desired Dimensions: Diameter of bio ball: 16mm Includes: 50 pieces of 16mm Bio Balls High quality buy, happy buyï ¼ 50 Pcs Aquarium Pond Bio Balls 16mm Canister Filter Media Marine Reef Sump Fish.50 pieces of 16mm Bio Balls. In the event of excessive buildup, you may gently rinse with water from an established aquarium, if desired. The bio-sponge inside provide more surface area for growth of beneficial Bio-Spira bacteria.
