Product description: <br>Brand new and high quality <br>easy to set up <br>CO2 system is designed for low cost planted tank use. <br> <br>What do you need to prepare for this systems? <br>below(not included) <br>2x 2 Litre of Coka Cola plastic bottle <br>1x 200g of Citric acid or 200ml of vinegar <br>1x 200g of baking soda <br> <br>Tips to install: <br>the bottle must be carbonated beverage bottle, do not use pulpy, green tea, mineral water bottles, etc. <br>trimming valve regulation avoid by sudden big or small, can't suddenly turn up, after immediately shut down again, so as not to cause abnormal pressure to the bottle. <br> <br>Note: Make sure carefully observe the direction of the parts before assembly. The usual wrong handle way will cause abnormal reaction components as follow: the contrary direction of the check valve and fine-tuning in the direct. <br> <br> <br>Package included: <br>1x Ferromagnetic <br>1 x Suction Ball <br>1x Switching Valve <br>1x Main Product<br>1、As an indispensable role to the photosynthesis of water plants, this CO2 generator main for provide a real environment for plants' growing. <br>2、The equipment uses an irreversible chemical of strong acid and strong base to produce CO2 gas. <br>3、The pressure principle push the acid liquid into the small soda liquid,the two liquids reacting to produce continuous carbon dioxide. <br>4、Baking soda+citric acid / alum+baking soda / acetic acid+baking soda, etc. <br>5、Easy to operate and designed for low cost planted tank use,to provide your aquarium plants a CO2 environment for better growing.