✔DURABLE - Made of high quality material, non-toxic, safe, energy saving and environmentally friendly. ✔ FUNCTON - Helps ensure that plants absorb the right amount of carbon dioxide, improving plant growth and health through an adequate supply of carbon dioxide. At the same time, it has a complete dissolution rate, which has a good effect on the aquarium. ✔ BEST DESIGN - The safety nut locking system design can effectively lock the CO2 pipe and water pipe, preventing them from loosening. It also has a sufficient dissolution rate and has a good effect on the aquarium. ✔ Fast Dissolving - Diffusion of CO2 with Reserve Osmosis Technology for increased dissolution. ✔ Practical and easy to install - Simple and convenient to use and install. Save the use of carbon dioxide, more environmentally friendly.