JBL ProFlora CO2 Advanced Bio Set is a simple and easy to use Bio-CO2-System for aquaria from 40 up to 110 litres content. CO2 is the main nutrient which all aquarium plants require in order to grow healthy and strong. In doing so, plants provide the fish and other living organisms in the aquarium with vital oxygen. JBL ProFlora CO2 Advanced Bio Set from an organic substrate by natural means, using the activity of harmless microorganisms. The substrate has a buffer system specially developed by JBL to ensure a practically constant production of CO2 for about 80 days. JBL ProFlora CO2 Advanced Bio Set is simple and easy to operate and do not require pressurised gas cylinders.JBL ProFlora CO2 Advanced Bio Set:+ with mini-CO2 diffuser for fast, loss-free CO2-enrichment of the water+ even red, fine and sensitive plants visibly flourish+ provides aquariums of 40 - 110 l with the basic plant nutrient, carbon dioxide (CO2) for 80 days+ simple to install within a few minutes+ contains pressure