When should you cut back and cut off CO2 in your garden.

been checkin it out and some say 2 weeks b4 flower finishes as it takes potency away sumwhat just what i picked up off anougher link

This is interesting. I always leave co2 running, even in the last day of flowering.

How could extra co2 lower potency or bud production? Please explain...

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like i say i duno i read that on here sumwhere duno the ins and outs of c02 im just new to it so u might know alot more than me whoknows? anybody?

co2 is beneficial in all stages of growth. And can be used all thexway threw last week of flowering