As everyone else has said, the 100 gal is going to be way too large for a baby ball. Also, using that large of an aquarium and trying to heat it with lights is going to suck all the humidity out of the air and will cause shedding problems. I want to add though that if you're going to use a tank setup, you should really take the sand completely out of the tank. Even if you cover it with a layer of aspen or cypress, your snake could easily burrow beneath the wood shavings and could potentially ingest the sand which could cause your ball to become impacted.