chasv77 answered grow question 2 years ago Hey there, I also grow in a semi (ha ha, some say desert) arid climate. I use grow cabinets, in dry ambient room humidity levels.
During the early stages of veg, my levels were always around 25-30%. This did not seem to affect growth rate.
After the plants get big, and more water is used, transpiration (evap of fabric pots as well) added 10% more humidity.
Unless the seed developer recommends a certain humidity range, it really isn't an issue to me.
As far as temp ranges go, I have gone from 80F to 65F, consistently with no issues,with all of my strains.
Some pundits say, no more then a 20 degree diff, between high/low. OF course some strains stop growing at certain low temps, so research your strain, and some grow tips for them.
Love it! Cant wait to watch her bud up and fill out