wow amazing, congrats
how far are you with the fry ? are they still alive ?
if they are already hitching, then its time to feed them adult Brine shrimp enriched. I find beta glucan and Dan's formula from the org site very helpfull in letting the fry mature faster and ... . you need to enrich it, for 12 hours, twice, changing the water in between to get the max proteins into the BB and fry eventually.
please post a pic of the nursery tank if you can, Im sure many would enjoy it/ learn from it. the UV will help alot specially with possible Hydroids.