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During flower, co2 use

I have been using co2 just recently last crop, but I started it in 4th week of flower. My question is when should I start the co2 , from day one of flower, or should I wait til I see the flowers start to form in about 2 weeks from the day I did 12/12 cycle......

Thanks

Faint
 

Floridian

Active member
Veteran
Yea,you dont want to miss out on that stretch having co2 enrichment.I never use it in veg but use throughout flower.Its less important the last couple weeks of 12/12 as compared to the first couple weeks.I have my temps around 85F ambient temps the first 30 days,the last few weeks I'll drop temps to 75 or so.
 

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