That tanks about the same size as mine. I was having trouble with humidity so I had to seal up most of the screen top to be able to keep enough moisture inside. I haven't seen it below 50% since I did that. I mist 2 or 3 times daily. I just left enough of an opening for the heat bulb up top. I have that same hide as you. You should be able to just lay it down flat. He should fit through the hole no problem and will love it being closed all the way around. Mines a 4 footer and she just squeezes through the opening, coils around, and completely fills up the whole hide.