The Dupla CO2 diffuser is composed of a suction-cup CO2 diffuser, a suction-cup CO2 bubble counter, a safety valve and a two-meter long CO2 hose. connection on the tap of your CO2 system.

It is absolutely imperative for aquatic plants to ensure a sufficient supply of CO2 in the aquarium, because CO2 provides them with the carbon necessary for their survival. The Dupla CO2 diffuser delivers sufficient CO2 for aquariums up to 250 l. CO2 escapes from the diffusion plate as tiny CO2 bubbles. The small bubbles are diffused in the aquarium so as to guarantee optimal absorption of CO2 by the plants. We draw your attention to the fact that the diffusion plate needs to start up so that the accumulated CO2 bubbles exert some initial pressure; a larger amount of CO2 is released in the aquarium at startup. Wait for this effect to stop, without increasing the amount of bubbles - if not, then you should decrease the amount of bubbles again