Key features

• •[Dual Purpose Filtration]: This aquarium filter media serves mechanical filtration to catch fine particles and biological filtration for raising good stuff
• •[Large Surface Area]: Premium ceramic filter media covered with thousands of porous tiny holes provides large surface area for bio filtration as well as filter out sparkling clear water
• •[Crystal Clear Water]: Aquarium bio media effectively absorbs fish waste and debris, providing crystal clear water for fish to thrive
• •[Valued Bulk 40-Pack Ceramic Blocks]: Each block measures 6.2" long, 1.5" diameter, approx 90 grams. Package includes: 40 packs ceramic blocks, approximately 7.9 lbs in total
• •[Wide Application]: crack into pieces to any size needed, update version is great for used in freshwater aquariums, planted aquariums, sumps and ponds