Well here's my 2 cents, don't know the right and wrong of everything, this is just what I am dealing with.

During my entire run, my RH at it's highest was 40%, that was only after watering, and went steadily down, and probably averages around 25% or 30%, but somethimes, my meter just tells me to fuck off and won't even register.
I live in a very dry climate anyway, the RH is very low.
Hasn't caused any issues for me that I know of, and so far I am pretty happy with results, time will tell I guess.
My temps usually range from 80 peak, to 70 low, have had a few times get down to 65 and up as high as 85, not very often, it's almost always 80 or 78, everytime I look, with 25%-30% RH.
Works for me.:thumbsup: