Yeah, thats what I figure too, if it gets too hot inside, i'll go outside...But I mean, I live in SoCal, and it gets 100+ for weeks on end here in the summer, and the plants just take it and say "Please sir, can I have some more?" I'll just pop an extra fan in each cab to get extra air circulation and if push comes to shove, outside they go! Whatcha running in the greenhouse/outside? I have like 8-10 strains I'm working with right now...well, in newborn seedling form currently, but soon they shall be magnificent!