Ok, I have looked everywhere on the internet for a DIY rat rack that can hold 6 tubs high and I'm not sure if I found the right one.

Ideally, I want to keep 12 females and 2 males and breed one female a week alternating the males every other week. I would like to build two 6 tub racks and keep 1 female per tub. After each female breeds, I would like to keep the female with her litter in that tub until they are ready to be fed off. Is this possible? If so, would I need to separate the males from the females? And could I use the medium size concrete mixing tubs or would I need the large style? If I can use the medium size, I found blueprints I can use to make a 6 tub rack. But I figure I need a large size...

Please let me know any thoughts or advice you have for this set up.

Thanks,
SC