3 walls are made from plywood, the top is screen/glass, and the front wall is plexiglass. There is a ½ inch gap under the front plexi to prevent fogging. There are 440 watts of compact fluorescent lighting.

Obviously, due to size, heat, and humidity (auto misting system), I need some forced ventilation. I was thinking one fan on the upper part of each side wall…

I really don’t know anything about this topic. What is CFM? What level of CFM do I need? How would any of ya’ll go about ventilating this system?

Also, what exact stores can I by these fans from at a good price? The only ones I can find are usually around 30 bucks—does anyone know of any deals?

Thanks in advance for all your help!

Dan

In my experience, unless the terrarium is sealed tight from the outside, fans should be kept internal circulating the air within the terrarium. I avoided bringing in external air because it can be quite dessicating if the source is drier than the air inside your terrarium.

I used a rather large fan from the RatShack, and I'm very happy with it. I think it's this guy: http://www.radioshack.com/product.asp?catalog%5Fname=CTLG&product%5Fid=273-243

It costs around $20 at the ttore, but it's a very sturdy unit and I'm very happy with it. The frame and blade assembly are all aluminum.

Sam