SUPER ACTIVATED CARBON clears aquarium water by removing organic waste, colors, odors, and dissolved medications. High-porosity activated carbon is used for superior cleaning power. SUPER ACTIVATED CARBON will not raise phosphate levels in the aquarium or affect pH. Safe and effective for all types of aquariums, even sensitive reef systems. Use when starting a new aquarium and replace monthly, or sooner if aquarium is heavily stocked or colors/odors are detected. Use as directed on product label. With Aquarium products, it’s easy to keep a beautiful saltwater, freshwater or reef aquarium. For over 50 years, has been creating innovative, research-driven solutions that make it easier to care for your fish and aquarium. Aquarium Treatment Supplies are designed to work in conjunction with each other to provide best results to control algae, promote healthy bacterial growth and help control and cure fish diseases and conditions such as ich and fin rot. They work to provide a safe, hospitable environment for fish such as tropical community fish, cichlids, goldfish and more. With, you can spend more time admiring your fish, and less time scrubbing your tank. Make sure to use all products as directed in order to ensure the best results.