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 also providing biological filtration as well.
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: AquaClear 20 Power Filter
Size: Designed for use in 40-70 gallon aquariums