[chairman]

Ok, valid point on the bioactive thing.

Your self sustaining tank should be fine for the babies. With worms, roly polies (they're isopods), and the other creatures you have in there you should have plenty of food for baby snakes without the addition of mealworms. A tiny species of slug might be a nice addition if they're native to your area. Not the ones that get really big, but the ones that stay garden snail size.

I would remove the spider, you don't need any "apex" predators in there other than the snakes.

Your plans for Medusa sound good. I'm sure they'll all appreciate the extra territory.