Features 1、Enhanced Plant Growth: This DIY CO2 generator kit promotes plant growth, providing excellent CO2 supply for aquarium plants and other plants. 2、Easy Operation: Equipped with a professional regulating valve, this CO2 generator kit is easy to operate and adjust. 3、Precise Pressure Measurement: The kit includes a professional pressure gauge that accurately measures CO2 pressure. 4、Long CO2 Tubing: With a 1.6m long CO2 tubing, this kit offers flexibility in placement and ensures efficient distribution of CO2 throughout the aquarium or plant environment. 5、Easy Installation: This CO2 generator kit is easy to install and provides a secure and safe CO2 supply system for plants, ensuring a healthy growth environment. Specifications: Item Type: CO2 Generator CO2 Tube Length: Approx. 1.6m / 5.2ft What do you need to prepare for this systems? Below (Not Included) 2 x 2 Litre of Coka Cola plastic bottle 1 x 200g of Citric acid or 200ml of vinegar 1 x 200g of baking soda Tips to Install: The bottle must be carbonated beverage bottle, do not use pulpy, green tea, mineral water bottles, etc. Trimming valve regulation avoid by sudden big or small, can not suddenly turn up, after immediately shut down again, so as not to cause abnormal pressure to the bottle. Note: Make sure carefully observe the direction of the parts before assembly. The usual wrong handle way will cause abnormal response components as follow: the contrary direction of the check valve and fine tuning in the direct. Package List 1 x Needle Valve 1 x Pressure Gauge 2 x Bottle Caps 1 x CO2 Tubing