Fuzzy mice are still to small and hatchling out of the egg will take down a hopper
The only time I ever fed a fuzzy to a BP was to a 29 grams twin.
It's important to feed the right amount at a young age as they have a faster metabolism and need food for growth.
Your temps if you provide a hot spot should be around 88/90
If you do not provide a hot spot mid 80's, 78-82 is not ideal for hatchlings.
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