Ok this won't be done for some time just getting knowledge ready just in case.

But I am planning on building a hatchling rack

I guess my main question would be what is recommended as for heating of these lil tubs. back heat or belly heat???

what does everyone else use? a 3" strip at the back for belly heat? or maybe larger like an 11" strip at the back for back heat and have 2 tubs side by side per shelf???

as shelf dimensions go is it better to be taller or is wide better or is there no difference just preference....

Thanks

Chad