Gravel and Substrate Cleaner 64 oz

Fast-acting aquarium gravel and substrate cleanerBreaks down slow-to-degrade organic waste in aquarium gravelRemove organic sludge and muck for clean aquarium substrateSpeed biological breakdown of toxic organic waste and clarify aquarium water. Easy-to-use formula contains biological accelerators and special microbes to remove organic sludge and muck from aquarium gravel and substrate. Natural solution also helps reduce and bind nutrients, including phosphate. 16 oz maintains up to 960 gallons; 64 oz maintains up to 3,840 gallons. For fresh and saltwater aquariums. Shake well before using.Please click on "More Information" for directions for use.