Healthy and luxuriant growth of aquarium plants is guaranteed by the presence of carbon dioxide. Normally, the simple movement of water by pumping or filtration systems causes the elimination of carbon dioxide through the water surface : aquarium plants without carbon dioxide lose strength and health turning yellow

This Hydor CO2 Green NRG Exclusive System solves the problem of low carbon dioxide in freshwater aquariums : simple and easy to use, with a unique diffusor technology which guarantees maximum efficiency for visible results in only 2 weeks