Tub sizes and when to up?

[Pork Chops N' Corn Bread]

I put hatchlings in shoebox tubs (4-6 quart depending)
I put 400-800 grams in 12 quart tubs
I put 600-1800 grams in 28 quart tubs

Breeding size + females in 41 quart systems

'
Would it be ok to put under 600 grams in 28 qt. tubs do you think?