Cool, thanks everyone for the suggestions!!! We had a signifcant drop in our temps as I installed cool tube reflectors (good for a 8 degree drop - thank you!!!) as well as with the winter onset we are running about 68-74 degrees. The mites appear to have gone on vacation as they are no where to be seen, but I'm sure the little bastards will be back in the spring. We also started spraying with sulphur for mildew which may have helped as well as put in a co2 generation system. Thanks again everyone for their input!!!