Hi. I have this grow chamber I built, that's 60" by 60" by 30" . It's just a wire frame with 2 mil plastic over it (pics on my website) . It has 4 shoplight tubes outside on the top and two cf tubes on the inside. The thing has temps from 84~90F during the day, and 70~74F at night. This is great for lowlanders, but my collection is primarily highland, as are most species. So..., how can I do SOMETHING to lower the temps atleast 5 degrees at night, atleast for theese summer months? I'm trying not to spend too much iether [img]http://www.**********.com/iB_html/non-cgi/emoticons/new/smilie4.gif[/img] , thanks.