Complete Kit Ready to Use: Get everything instantly—2 ceramic rings (Biomax), 2 carbon filter inserts, and 2 foam filters—all in one box. Aqua Clear Filter 30 4-Pack AquaClear 50 Filter Media Kit - Three-Stage Filtration For 20-50 Gallon Aquariums 20-50 Gallon Aquarium Filter Pads Each set includes everything for complete three-stage filtration: upgraded 3-in-1 carbon filters (way better than dealing with loose carbon pellets), coarse... No extra purchases needed, saving you time and effort Conloquen 2 Sets Filtration Tank Filters Replacement for Aquaclear 50 Gallon Power Filter AquaClear recommends you replace the AquaClear Activated Carbon Media monthly, replace the AquaClear Bio-Foam Media every two months, and the AquaClear Bio-Max media every three months Easy Maintenance: Designed for simple filter changes to keep it performing well. AquaClear 50 Filter Media Replacement Hagen AquaClear Power Filters | Aquarium Supplies At Fish Tank Filter Inserts 100% Satisfaction Guaranteed: Contact us anytime — we resolve issues promptly