I searched for a thread pertaining to my problem but I couldn't come up with what I was looking for so if this is a repeat I apologize.
Im building both a highland and lowland chamber for my neps. Ive got a handle on everything minus the air circulation. I want to hook up a couple computer fans to some dc cellphone transformers but my actual dilemma is what direction to place the fans and how many i may need... not sure why I cant get it through my head, but if I placed a fan on one side of my terrarium facing outward(blowing the air from the inside to the outside) with a vent on the opposite side of the terrarium, wouldnt I have a good amount of air exchange? Or do I not even need the vent on the otherside to let in air (all sides will be enclosed). Or should I have a fan just hangin out inside the terrarium to push some air around once in a while. Im trying to keep in mind my requirements for high humidity as well. Any help would be appreciated, hopefully someone can decipher my freak paragraph I just constructed.