This black medium/large Quietflow coarse foam pad is designed specifically for Aqueon Quietflow Canister Filter 300 and 400. It offers both biological and mechanical filtration, providing a large surface area for beneficial bacteria to thrive. This pad effectively traps large particle debris and solid waste, significantly improving the overall appearance of the water and the living environment for fish and other aquatic livestock.

To use this Quietflow foam pad, simply place it inside your Aqueon Quietflow Canister Filter 300 or 400. It's a great addition to keep your water clean. As for maintenance, check the pad regularly. If it's full of debris, you can gently rinse it in water from your aquarium. This helps keep the beneficial bacteria alive. When rinsing, don't use tap water with chlorine as it can kill the good bacteria. Also, replace the pad when it's too worn out or dirty to ensure it works effectively. Keep these tips in mind, and your aquarium will stay in great condition.