I want to build my own rack but I have a few questions. I would like a rack for 6-8 BPs. I'd like to use heat tape and rubbermaid containers. I'll build another one for babies if I ever get a clutch but for now this rack should be for juvies and adults. I have my 1 year old female in a rubbermaid 2221 right now with a zoomed or whatever it's called UTH pad (which I'm not a fan of).

What size do I make the rack to accommodate snakes ranging in size from a few months to full grown? I'd like to have all the same size tubs so I can use this rack for bigger ones and build a separate one for babies when that happens. What size heat tape would you use for a rack like this? 11"? I can figure the building and wiring part out easy enough. My main questions are what size tub/rack does a fully grown adult bp need and what size heat take should I use for this endeavor?

Thanks