Thanks to the incredible tolerance, extreme adaptation to the cannabis plant most seedlings "get by to the human eye" with low humidity in early veg but it is FAR FROM IDEAL and far too low. Marijuana in veg likes it warm and humid. Think like a greenhouse. You ever been in one of those? 70 - 80% relative humidity with warmer temps, lots of fans moving that air, and lots of light in the 6500 kelvin range and cannabis plants take right the fuk off in veg. Especially if you supplement the air with extra carbon dioxide. Believe that!!!