PurifyLogix Replacement Canister Filter Pads for Cascade 700/1000 CCF2UL/CCF3UL Generic Aquarium Floss Media, 2 Upgraded Activated Carbon-Coarse-Activated Carbon Filter Pads and 6 White Floss (8)Brand: PurifyLogix Color: Blue; White Features: 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 Penn Plax Cascade 700 1000 All in One Aquarium Canister Filter Sufficient quantity: Includes 8 PurifyLogix