API Bio-Chem Zorb Size 4, 2-Count Multi-Colored

API Bio-Chem Zorb (formerly branded Rena Bio-Chem Zorb) is the most scientifically-advanced filter media available. Use Bio-Chem Zorb for sparkling clean water and healthy fish! Removes organic waste, toxic gases, water discoloration, foul odors and phenols in fresh and saltwater aquariums Removes toxic heavy metals in freshwater Bio-Chem Zorb will not release phosphates Bio-Chem Zorb is a blend of 2 research-grade scavenger resins, 2 pharmaceutical-grade ion-exchange resins and high porosity activated carbon in a convenient filter pouch. Directions: Easy-to-use pouch works three to six months, change regularly for clean and clear water. Specifications: Size 6 - Can be used on any aquarium filter including the API XP Canister Filter up to 55 gallons

Filtration material composed of a unique blend of pharmaceutical-grade ion exchange resins, research grade organic scavenger resins & high porosity activated carbon. For fresh, saltwater and reef aquariums. Designed to fit the API nexx™ FILTER. Features Pre-dosed cartridge for mechanical and chemical filtration for nexx external filter Cleans and clears aquarium water Multi-stage filtration to remove small and large aquarium pollutants