I finished a large 28 cu. ft. highland Nep chamber a couple of weeks ago. It has 12 fluorescent tubes over it and has a pretty good seal to keep in humidity.
My problem is heat. I've removed most of the ballasts from the fixtures already, but there is still far too much heat in there. I don't have a thermometer, and it may just be that it is so much warmer than my house (60°F).
Regardless, even if the temperatures get up to 80°, they should drop back down to 60° at night. Any ideas on how to cool the temperature by, say, 5° F? Thanks.