Actually beings I'm an engineers I had everything laying around I spent 7$ on a 5in desk fan and I think 40& on lights I got an ec and Ph meter for I think 38 or so and a weather strip kit I had around.... but before the fan it was just getting too ho so I took the back panel off put the Fan there and now it sits at a perfect 76° before it was getting up.to +95!! That and I think with the back panel off if makes perfect for fresh air exchange and co2 enrichment...