Function : Together use with Co2 Regulator, it can count the quantity of Co2 and supply the plants with enough Co2. 

Feature : Easy setup and use 

-It designed for screw lock on the Co2 tube, don't worry the tube loose off by the pressure and caused damage.

- Dobule check valve patent designedm keep the regulator and Co2 Bottle from damage. 

- For easy maintenance, adopt the design of replacement accessories.

Suggestion 

- 2-3 Co2 Bubbles in 1 second for thriving plant aquarium. (Adjust the quantity of Co2, for different density of plants or diffusion effciency of diffusor.)