About This

• 【Dual Purpose】This aquarium filter media serves mechanical and biological filtration, remove ammonia & nitrite and stabilize PH value, providing crystal clear water for fish to thrive.
• 【Vast Surface Area】Hollow design to increase surface area. Porous surface good for bacteria to colonize. Enhance water permeability and adsorption capacity.
• 【High Quality Material】100% aquarium safe non-metallic ceramic, will not leach aluminum or any heavy metal. It can be cleaned and reused, safe and not fragile.
• 【Wide Application】Great for used in freshwater aquariums, pond and saltwater fish tank. Crack into pieces to any size needed.
• 【Product Size】Each bio filter media measures 6.2" x 1.4" x 1.4". Package includes 90 packs ceramic filter blocks.