P
PharmHand
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You probably got a better handle on your nighttime humidity than I do. From what Iāve read the plants will release more co2 at night if the humidity is too high. Mine goes 2500+ but it doesnāt seem to hurt them. My monitor shit the bed last run and left the c02 running for like 8hours straight and my ppms went up to 10000. Only a few plants showed some burnt spots similar to cal defLast i checked it was 1600ppm when the lights came on. This was maybe a wk ago