Figong
Well-Known Member
Lower humidity (generally below 30%) causes the plant to only partially open the stomata, if the plant opens them at all. This restricts or almost completely cuts off the CO2 that the plants love as part of the growing process. Two symptoms of this could include what appears to be very slow, or stunted growth.. and some symptoms typical of nute burn (but would not be true nute burn) and those two symptoms are not guaranteed to show 100% of the time, but are definitely more prevalent in some strains than others.