So im wanting to build a rack, atm i only have to bp's ones a hatchling the other is i would say a sub-adult and they're both in 15 Qt tubs. Now i was thinking of making this rack so i could fit two 15 Qt tubs on 1 shelf, then when they get bigger switch it to a 28Qt per shelf, but iv'e never been a big measure type person or dealt with much wood, but if anybody could help with design examples or anythg even tips would amazing. If you have questions ill answer best i can to help you, help me.