i maintain 50-60 percent and it helps alot, the better the climate = better bud, faster growth, more yield, and of course a sooner harvest.

humidity helps fight off mites too, and also makes it harder for them to even begin spawning. can stress how important it is, the lower the humidity the more your plants are stressing to stay cool.

all plants have humidity requirements, if your temp is around 68-70 your humidity should be about 50-60

if your going for 75-80 degrees it should be around 70 percent( because of how hot it is your plants will need to transpire if that moisture is not in the air) in ordoer to avoid mold and such make sure the humidity drops properly during the night cycle. ive seen major changes from increasing humidity, make sure you get a good tool for measuring it.