If you use enhanced CO² during veg & flower your plants will grower quicker and grow larger. I like to run my CO² generator in veg & flower cycle. Starting with day one of veg from clone and all the way to the last day of harvest.

Hope that helps you decide.
Zandor Reviewed by Zandor on . Co2 Injection During Flowering Is Co2 injection just as important during flowering as it is during veg? Rating: 5