FZONE Aquarium Inline CO2 Diffuser, Fits 5/8" ID tubingBrand: FZONE Color: Silver Features: 70% High Efficiency CO2 DiffusionThe inline CO2 diffuser effectively dissolves CO2 into the water flow, creating fine mist bubbles that maximize dissolution and enhance plant absorption. With up to 70% efficiency, it delivers cost savings and is perfectly suited for long term use in planted aquariums. Space Saving External DesignThe external CO2 diffuser is mounted on the filters outflow pipe, eliminating the