The Fluval Bio-Foam is specially crafted to fit snugly inside the Fluval Nano Filter. It's a top - notch solution for mechanical filtration, as it expertly traps debris. With its expansive surface areas, it acts as a breeding ground for beneficial nitrifying bacteria, delivering excellent biological filtration. Custom - sized, it fits flawlessly in the filter chamber, preventing any debris from bypassing. The foam has an ideal pore size that ensures smooth water flow, reduces clogging, and offers long - lasting filtration. It's perfect for freshwater environments, making it a great addition to your aquarium setup.

Using the Fluval Bio - Foam is easy. Just place it inside the Fluval Nano Filter. Make sure it fits properly in the filter chamber to prevent debris from bypassing. When setting up your aquarium, this foam will start working right away to trap debris and support the growth of good bacteria. As for maintenance, check the foam regularly. If it seems clogged, gently rinse it in water from your aquarium (not tap water as it can kill the beneficial bacteria). Replace the foam when it's too dirty or worn out. Keep in mind that this foam is designed for freshwater environments, so don't use it in saltwater setups. With proper use and care, your Fluval Bio - Foam will keep your aquarium water clean and healthy for a long time.