Bests & Worsts Reviews from Amazon

Bag works great. Some are having bad experiences so let me try to lighten your load. This will not increase yields unless your plant you're using it on has the max amount of light it can take. co2 will raise that maximum ceiling, allowing your plant to take in more light than usual but you first have to give your plant all the light it can take already which is hard to do sometimes. If you don't give your plants all the light they can take while giving co2, you wont see much of any difference. Co2 works. It's been proven, but you have to have everything else working too. You need about 300 watts per plant to all buds at around 1000 par to get it to do how you're thinking or hoping its going to do. That being said, with a co2 bag, you can get a max of around 1500 par if available without burning your plants. Without co2, even 1000 par can be too much. Co2 expands the capabilities of your plants to intake everything, but you must be ready to give it everything as well or you're just wasting money.