This weekend I plan on starting to build my first rack, just 4 shelves to hold 41qt tubs. I have two females that can go in the rack right away but are 41 qts a little too big for a 900-1000 gram female? Would it be better to use 4" or 12" heat tape? And what exactly is the aspen/pine substrate you all use? I only use paper towels, but am thinking about switching one of my females.
Thanks!!