-Dehumidifiers are pricey
-Pulling air from a colder environment will be lower humidity naturally but your temps are running on the lower side already.
-Pulling air from a cooler area with a dehumidifier in the grow area will decrease humidity and increase temperature, but be expensive and a pain in the ass.
Yep, what they said. Lots of air movement. Getting it warmer in there will decrease the chance of mold as well.
Idk if you care, but the causal relationships in growing are what I love, so if you care? We are dealing with latent heat in the question of humidity. Water evaporates because it traps heat and becomes vapor. Its called latent heat because we can't measure how warm it is while its in the air, just how much vapor is present. The colder the air is, the less vapor present because it is impossible for vapor to stay vapor without heat. When humid air comes into contact with a cooler object (In this case your buds), the heat is transferred through conduction and the vapor will remain as water. THEREFORE! Increasing the heat in your growspace will decrease the amount of vapor in the air that can be transferred to your buds.
Taking some imaginary numbers - lets say if it is 70F and 67% humidity, you would get .5oz of water on a 2 square foot piece of glass. If it is 85F and 67% humidity, you would have closer to .1oz of water on that piece of glass because the heat is keeping the moisture trapped in the air. More air movement in your growspace will, in this case, expose the vapor settling on your plants to higher evaporation by exposing the liquid to higher levels of heat. How? Heat in the air continually being swept over the water causes evaporation. Its why evaporation takes longer when its cooler outside. All about heat baby.
You will get bud mold from moisture, humidity leaves moisture on your plants.
My advice, lots of air movement and get that temperature jacked up good buddy.
GL,
-Grizz
