Here is the procedure that we started about 3 years ago, and it has worked well for us. I keep hatchlings in ARS baby tubs. I used to move the snakes into CB-70 tubs at 500 grams, and found that many of them will go off feed for about 9 months. I didn't find that acceptable, so we tried something new. Now I will leave a snake in the ARS baby rack until it quits eating, and then I move it into a CB-70. I currently have some 1200 gram females in hatchling tubs, because they still eat. With that said, I do have some 450-600 gram females that quit eating in the hatchling tubs, but I have kept them in there, because I now feel that our minimum size for a CB-70 is 700 grams. They seem to go back on food faster in the hatchling tub vs. the CB-70 if they are around 500 grams.

I hope that helps,