Aquarium Poret® Polyether Biochemical Filter Pond HMF Filtration Sponge Filter Foam Sheet Sponge Pad for Fish Shrimp Tank Pond Reef Canister Media 45x31x5cm (Black, PPI 45 fine (shrimp safe))

• 45x31x5 cm (18x12x2") These Open Cell polyether filter foams are fully resistant to water.
• The amount of surface area the filter creates makes a great feeding surface for shrimp, fish. Microorganisms on the sponges surface making it an ideal place for shrimp, fish to find natural food.
• Highly active bacteria cultures are required for efficient cleaning of water in aquariums and fish ponds.
• They are suitable for internal, external filters and even sumps too. Freshwater or marine.
• Made in Germany

To provide effective biodegradation, the different cultures used must be provided an optimum living environment. Our fishkeeping and aquafarm filters set new standards in physical filtration and biological degradation. Made from specialty polyether foam materials with enormous internal surface area, they ensure an optimum living environment for bacteria. Due to their special design, they harbour much higher populations of degradation-active cultures than do other filter materials. Poret foam is a viscoelastic polyether foam with outstanding resistance to acids, bases, hydrolysis, and other forms of chemical attack often encountered in aqueous environments such as aquariums, sumps, or ponds