When to use Co2

I recently started flowering (about 2 weeks in now, just starting to see pistils.. and balls!!)

My question is when should I start using Co2Boost? (Got it for free from a friend at hydroponichomes.com , looked it up on the site.. $125 , omg , this stuff must do something great, right?)

I have it running now, I just changed the water, added more bloom nutrients, raised the light, added a new light.. and now I have the Co2 running on top of them.


Is this good or bad? I'm told as long as they're flowering it'll be okay , is this true? Will it help in the early stages as well?

helps at all stages of growth

Co2 is needed only for fruiting your room thrives @ 1500 ppm