stephen hawking

I have been given a rectangular tank thats inside demotions are 57.5 L x29.5 tall x29.5 wide 1. Will a 24 x24 x24 fire box be alright this tank? 2. How many Butts will fit on a rack that will go inside this tank? 3. How much clearance between racks do I need for Butt? 4. If I go reverse flow...