I'm new to using a fishtank as a terrarium, my old Nepenthes units were DIY so I could cut holes in the side and mount a cooling fan in the wall. But now I've got an aquarium as my terarrium and would like to suspend a 2-3" radio shack CPU fan in there just to move the air around and probably help expell the warm air at the top too. Have any of you got images of how you suspend yours?