Upgraded formula: Instead of the traditional blue coarse cartridge, we use a 3-in-1 coarse cartridge with activated carbon, which better filters fine particles and adsorbs odors without restricting the flow of water, providing a healthier environment for your fish
Suitable for: Compatible with SUNSUN HW-304B/404B/704B/3000 Canister Filter
Sufficient quantity: Includes 8 PurifyLogix sponge bio filter pads (6white pads and 2coarse pads ): use one 3in1 Coarse Filter Pads and 3 white floss pads for two cycles at a time
Longer life cycle: Washable and reusable after cleaning
Efficient: Provides both mechanical and biological filtration
Please note: The white cotton has been vacuumed, after receiving the package, open it and let it sit for a few hours to rebound, if you are in a hurry to use it, you can also pour hot water on it to accelerate the rebound!
