1、[Produces Fine Bubbles] The custom ceramic used in the aquarium CO2 diffuser has microscopic small pores that result in very fine and thorough bubble diffusion. 2、[High CO2 Saturation] CO2 refiner provides a high level of CO2 saturation in your aquarium. The fine mist of CO2 is easily broken down into a column of water and absorbed by water plants. 3、[Ceramic Disc] Specially made micro porous ceramic disc is permanently attached to the acrylic foam counter to maintain a tight fit under high pressure and provide an ultra fine CO2 mist. 4、[Acrylic Material] The body of this fish tank CO2 diffuser is made of premium, transparent acrylic material, which is not easily broken during pre forming care. 5、[Suction Cup Installation] Mini CO2 refiner with delicate feel, use the suction cup to place it safely in the corner of a planted aquarium and can be used with small and medium sized fish tanks. 1 x Aquarium CO2 Diffuser1 x Suction Cup Item Type: Aquarium CO2 DiffuserMaterial: Acrylic