well, the sure way to put an end to them is to lower the temp.. lower it below 65... keep a fan on your plants, they will still dry fast..

there is a chance that 110 degrees will only perpetuate the mite problem..
I read somewher that mites at 70 degrees multply 10 fold a day.. mites at 85 degrees multiply at 1000 per day.. yikes.. so 110 may be a paradise...

if you increase humidity you are running a serious chance of getting mold....arghh