I currently have a 4x3x3 greenhouse I am keeping my Aldabra in. I am debating on ordering a computer fan and hanging it in the enclosure to create air movement. I am planning on mounting it inside the enclosure. Should I cut the plastic and mount the computer fan against it to bring in fresh air or am I ok just moving the air around the enclosure? I am probably worrying about nothing but just think it might be more comfortable and make temperatures more homogeneous through out the enclosure.