10 Count Large Filter Cartridges Compatible with Whisper Bio Bag Filters, Large Aquarium Filter Cartridge for Whisper 20i 40i, IQ20/30/45/60, PF20/30/40/60 and Repto Filter

10 Count Medium Filter Cartridges Compatible with Whisper Bio Bag Filters, Large Aquarium Filter Cartridge for Whisper 10i/IQ10/PF10 and Repto Filter 90 GPH

16 Count Large Filter Cartridges Compatible with Whisper Bio Bag Filters, Large Aquarium Filter Cartridge for Whisper 20i 40i, IQ20/30/45/60, PF20/30/40/60 and Repto Filter

16 Count Medium Filter Cartridges Compatible with Whisper Bio Bag Filters, Large Aquarium Filter Cartridge for Whisper 10i/IQ10/PF10 and Repto Filter 90 GPH

8 Count Large Filter Cartridges Compatible with Whisper Bio Bag Filters, Large Aquarium Filter Cartridge for Whisper 20i 40i, IQ20/30/45/60, PF20/30/40/60 and Repto Filter

8 Count Medium Filter Cartridges Compatible with Whisper Bio Bag Filters, Large Aquarium Filter Cartridge for Whisper 10i/IQ10/PF10 and Repto Filter 90 GPH