The diffusion plate decomposes the CO2 in lowercase bubbles, then the CO2 can easily dissolve in the water allowing the plants to absorb the CO2 for photosynthesis the steel diffuser stainless is solid and durable, hard to break, and non-toxic for your animals and plants Ceramic disk is replaceable, it is easy to remove and replace, and please tighten when you install it Suitable for aquariums up to 18 mm wall thickness The total length of 29 cm. The ceramic disc has a diameter of 36 mm, the CO2 diffuser is suitable for standard CO2 air tubes of 4 * 6 mm (inside diameter 4 mm and 6 mm outside diameter) it is absolutely imperative for Aquatic plants to guarantee a sufficient CO2 intake within the aquarium, as CO2 provides them with the carbon indispensable to their survival. The CO2 diffuser delivers CO2 in sufficient quantity for aquariums. Decrease of CO2 losses Fine bubbles, easy cleaning greatly promote the photosynthesis of plants High quality stainless steel and advanced ceramic technology The CO2 escapes from the diffusion plate in the form of tiny CO2 bubbles that Allows CO2 to easily dissolve in water so that plants can absorb CO2 more quickly and effectively proceed with photosynthesis, thus reduces the waste of CO2 gas. We draw your attention to the fact. that the mailing plate needs to start that accumulated CO2 bubbles exert some initial pressure; A larger amount of CO2 is therefore released into the aquarium at startup. Wait until this effect stops, without increasing the amount of bubbles - otherwise, you will again decrease the amount of Bubbles. Check the CO2 rate within the aquarium using a CO2 permanent test system. Adjust the amount of CO2 in the aquarium by increasing or reducing the number of CO2 bubbles. The diffuser ceramic disk is consumable. The service life varies depending on the type and speed of algae growth in the aquarium. The maintenance period is usually 7 to 60 days. If there are more growing algae on the ceramic disc, the bubble diffuser will not produce outside the CO2 or the bubbles grow, you can soak it in 84 disinfectant for one night (the supermarket sells very cheap ).