This CO2 diffuser from Aquario is one of the best on the market. It features a small, brown ceramic disk which does an excellent job of breaking down CO2 gas into the finest mist of bubbles. The finer the bubbles, the better the CO2 can dissolve in the water and therefore plants have an easier time utilizing the CO2.

The other great part about this diffuser is that it's made out of break-resistant acrylic as opposed to glass so it can very easily be attached to tubing without having to worry about smashing it. Suction cup is included for easy installation. We've found the large size diffuser to work in any aquarium and as such, we only carry the one size. Co2 pressurized gas system required to utilize this product.