The JBL ProFLora Direct diffuser also saves gas compared to traditional glass CO2 diffusers. A special membrane and the form of CO2 injection into water make the gas solubility extremely high, mainly due to a special, replaceable membrane made of multi-molecular PE material. This allows you to save up to 20  of the supplied gas. It is recommended to replace the membrane about once a year.  Remember to install the diffuser as close to the filter as possible, on the outlet hose, which supplies filtered water to the aquarium, so that the gas dissolving