Fluval Replacement Diffuser Part for BIO-CO2 Pro 500L Aquarium Diffuser

The Fluval CO2 Diffuser (for 500 L system) is a replacement ceramic diffuser designed for the Bio-CO2 Pro (up to 132 gallon) kit. It produces an ultra-fine mist of carbon dioxide bubbles, maximizing CO2 dissolution into the aquarium water for efficient uptake by plants. Made of clear, durable acrylic with a high-quality porous disc, this diffuser ensures reliable, even CO2 distribution while remaining unobtrusive in the tank.