Bio-Glass 3 liter

Porous, fused silicate media for efficient biological filtrationCreates and maintains optimum conditions for beneficial bacteriaGreat for layering in canister filters, wet/dry filter, and power filtersBio-Glass is made from natural silicate fused at a high temperature. Its pore structure is similar to that of loose soil, making it optimal for the colonization and growth of microorganisms. Its porous structure gives it up to 8 times more surface area, compared to other bio-rings. Great for a wide variety of filtration systems like submersible, canister, wet-dry, and power filters. For fresh or saltwater aquariums.Please click on "More Information" for FAQ's regarding biological filter media.