DescriptionProduct name: Aquarium CO2 Magnetic Solenoid Check ValveMaterial: 304 stainless steel+ aluminum alloyIn order to achieve better results in water planting, we need to add carbon dioxide to the aquarium, which will makethe plants grow faster, the colors are more vivid, and the leaves are thicker.The main function of the pressure reducing valve is to reduce the air source pressure and reach a stable value inorder to obtain stable air source power.The double meter displays the inside pressure in the bottle and output pressure respectively, the bubbler counteraccurately controls the air volume. Thefine adjustment valve is used for adjusting the gas output.