This NEW fertilization system without bottle and others external tools (PATENTED), is provided with a carbon cartridge which ensures a constant release of carbon dioxide for electrolysis and do not provoke sudden changes of PH in the aquarium. CO2 Life is available in 2 models: one for aquariums from 40 L to 150 L – the other for aquariums from 100 L to 250 L. It is adjustable according the requirements of the user, increasing or decreasing the CO2 release.The carbon cartridge has small dimension and has to be changed every 2/4 months depending on the aquarium characteristics and dimensions. CO2 Life is easy to install and regulate; it is extremely compact and do not disturb the general look of the aquarium from outside; it can be positioned vertically by its suction cups and everywhere i.e. behind plants or stones.