A-597 AquaClear 20 Activated Carbon Insert   - For AquaClear 20 and "Mini" - Superior adsorption of impurities - Broad spectrum organic compound removal - Improves water clarity, color and odour - Supports benefical bacterial colonies - Removes chlorine, smoke and aerosol spray contaminants - Does not change water characteristics - For fresh and salt water AquaClear 20 Activated Carbon Filter Insert improves water clarity for fresh and saltwater aquariums. Exclusively designed for the AquaClear 20 Power Filter, it provides superior adsorption qualities which eliminate odors, discoloration and impurities. Net Weight: 1.6 OZ(45g) AquaClear Activated Carbon 20 Filter Insert for use in 5-20 US Gallon (18-76L) aquariums. The photographic product images on this web site may not exactly reflect the product. Design revisions and color variations may exist.