AquaClear 50 Foam Filter Inserts - 3 Pack - Aquarium Filter Media Replacement A1394

AquaClear Filter Insert Foam performs mechanical filtration by trapping particles and debris as they pass through the insert. This unique foam designed for use with AquaClear Power Filters features optimal pore size for efficient mechanical and biological filtration. Sizing: Size 20: 5-20 gallon aquariums Size 30: 10-30 gallon aquariums Size 50: 20-50 gallon aquariums Size 70: 40-70 gallon aquariums Size 110: 60-110 gallon aquariums