CO2 Life is an innovative fertilisation system, free of external supports or oxygen bottles. The patented system uses a carbon cartridge that generates a constant release of carbon dioxide through electrolysis that avoids rapid changes in the aquarium's pH levels. CO2 Life is easy to install and to adjust, it is extremely compact and does not disturb the aesthetics of your aquarium as it can be positioned anywhere in the aquarium even behind rocks or plants. The carbon cartridge needs to be replaced every 2/4 months, depending on the aquarium's characteristics.