CO2 use should be when the lights are on, that is when the plants use it. I heard that co2 should only be used during the growth stage. I am currently useing it in flowering and it definately has increased the size and growth rate of buds. i won't know about potency effect untill i test this batch.
i keep the co2 at 1500 ppm.
the grow room must be air tight or you're just wasting the co2
also a small fan on the floor pointed upwards keeps the heaver co2 dispersed well.
peace
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heartsurgerysurviver Reviewed by heartsurgerysurviver on . FLOWERING = CO2 amounts???? i just have a very basic question. when i put the plant into the flowering cycle, does it need more CO2 during the 12hour 'lights on' than if it was in the vegetative state? thanks for any responses. take care Rating: 5