Large Aquarium Filter Cartridges Compatible with Whisper Filter Systems, 16 Count Replacement Filter Cartridge Fit Whisper 20i 40i, IQ20 IQ30 IQ45 IQ60, PF20 PF30 PF40 PF60 & Repto Filter

These Large Aquarium Filter Cartridges are fully compatible with Whisper 20i, 40i, IQ20/30/45/60, PF20/30/40/60 and Repto Filters. Sized 7.1″ x 5.1″, these replacement cartridges fit 20–60 gallon aquariums perfectly. Featuring triple-stage filtration with double-layer dense filter media and high-performance activated carbon, they efficiently trap fish waste and food debris, remove water discoloration and unpleasant odors, reduce glass scaling, and keep aquarium water crystal clear and healthy. Pre-assembled for easy, tool-free installation, these filter cartridges feature reinforced edges to prevent carbon powder leakage for mess-free maintenance. The durable built-in ABS frame ensures even distribution of filter media, delivers full water filtration, and resists deformation for a snug, stable fit and long-lasting performance. For best results, replace the filter cartridge every 2–4 weeks. We offer reliable after-sales support to help you maintain a clean, safe living environment for your aquatic pets.