Fluval AquaClear Foam Filter Inserts work to trap particles and debris to improve water clarity and provide a healthy aquatic environment. These inserts aid in your mechanical filtration system by collecting particles and debris in the water, while helping provide biological filtration as well. They are safe for use in both fresh and saltwater aquariums.
Features: Works to improve water clarity in both fresh- and saltwater aquariums; Foam traps particles and debris to help aid in mechanical filtration
Intended For: Designed for use with the AquaClear 20 Power Filter
Size: For use in 5-20 gal. (18 â 76 L) aquariums