If you decide on another tank, look at the screen covers that they have there to fit different size tanks. They are framed and hinged so you have easy access, and they are designed for the lamps to sit on top of them so no fire hazard. That type of screen cover is what I have and i love it! It was easy to cover and insulate it tooHeading to a store in the morning an hour away from my house to pickup a new tank to seperate them. I really do love them both soooo much and want the best for both of them. Was just upset that I had to go out and spend more money on another tank which is for the best anyway.
As for the tank lid, there is foil across to improve humidity for tortoise. Will this work for longterm? or will i need to improvise a new lid to keep humidity?