i dont use hides in my tubs i have a covered back and use newspaper so if the want to hide they go under the paper but imo i go
hachling to 500g in a 6qt
501 to 700g male 1000g female in a 15qt(easy way to keep track of breed ready animals)
1000 to 2000 in a 32 qt (also breedable males goes here at 500g+ )
2001+ goes in a 41 qt