I keep hatchlings in 6 qt until 400 grams, 15 quarts until 1000 grams, and then they go into 28/32 quarts. Anything over 2000 grams goes into CB-70's.

I wouldn't put that small of a hatchling into a 50 qtart even if you cluttered it up. Just get the $2 6 quart Sterilite and that'll do for a good few months at least.