Vicki, I have an 18 x 18 x 24 Exo-Terra. I too had problems keeping the humidity up. So what I did was I took the screen off and bought a piece of acrylic at Home Depot (it was a little thinner then I wanted) and then my hubby (bless his heart) cut the piece of acrylic down to the size I needed and rounded the corners a tad so they wouldn't be so sharp. I then mounted my fan from this to hang on the inside of the tank. So it is completely sealed on the top. My light fixture then rests on top of the acrylic and the frame of the exo-terra (I have an 8 bulb T5 fixture that is 2 ft long). It over laps my tank perfectly and the bulbs don't actually touch the acrylic or the frame. This has helped enormously! I am not sure if you have the same feature, but I have little vents that are closable that run along the door. I keep these open and maintain about 70% humidity during the day.
Oh, and if you take the screen off you will see a spot in the frame of the Exo-Terra that will allow a cord to fit through for your fan!
Hope this helps!
Last edited by Becca; 11-10-2008 at 07:06 PM..
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