Since were talking about belly heat I figured I'd throw my questions here.

I am looking to get a rack system with belly heat alone. Is that all that is required as a heat source? (I will be having it built by a reputable source)

Also does it run along the whole container meaning there in no cool side? I'm sure I know the answer to this but I would rather know for sure then guess.

Would it be "bad juju" to have a adult rack built and just put the juveniles in the adult tub in their own appropriately sized tub?

Thanks for any info. I'd rather not have to spend the $ if I don't need to as of now getting different sized racks, but if need be I will. I want to have the best information possibly so I won't do anything to harm my babies. Again, thanks in advance.