Our Premium Activated Carbon utilizes the highest quality granular carbon available. It is more economically priced than our Extreme Carbon while providing superior performance to our Economy Carbon. It effectively clears aquariums of toxic organic substances, discoloration and foul odors. The pH of your aquarium will not be affected. It's an excellent carbon for use in filter cartridge refills. Use in fresh and saltwater aquariums and ponds. For your convenience, each jar of our Premium Carbon features a flip-up handle.