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BudgetGrower
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Just been thinking how effective the new leds are, They produce less heat, so you can use a smaller extractor fan/filter, when the cooler weather sets in, we are likely to reduce the fan speed, the amount of available CO2 is going to decrease, weed can handle 1000 parts per million (ppm), natural concentration in the atmosphere is around 400 ppm so that short by 600 ppm and a low amount of air exchange in early/mid flower will reduce it, (guessing 300 ppm), the plants could be getting 1000 umol/s and good amount of plant food, is the low amount of CO2 Likely to cause problems?
Is there a minimal airflow per ft2 we should aim for, to keep CO2 in range?
with older lights, you need a larger fan to remove the heat, so it was never a question.
Is there a minimal airflow per ft2 we should aim for, to keep CO2 in range?
with older lights, you need a larger fan to remove the heat, so it was never a question.