API(R) RENA(R) Super Activated Carbon The Rena FilStar Activated Carbon is formulated using superior quality carbon that is quite effective to get rid of bad odours, organic wastes and all kinds of artificial colors from your salt water as well as fresh water pond. The Rena Super Activated Carbon canister filter helps to eliminate all impurities in a hassle-free manner. Features: Activated carbon formula Hassle free use Gets rid of bad odour and organic waste Item Specifications: Size: 285 g API(R) Super Activated Carbon Large # 6 pouch Purpose and Benefits: Super Activated Carbon removes dissolved organics, odors, colors, toxins, medications and much more. This higher grade carbon offers a greater absorption than other regular carbon and does not affect pH. Super Activated Carbon is safe and effective for all types of aquariums, even sensitive reef systems.