You want the temps in the 70's daytime w near 100% humidity. Many people just seal their tanks completely and only air them out for a little bit during feeding. Definitely check out how to culture fruit flies as you'll need em. It is quite simple but can seem to be a hassle at first.

dendroboard.com is another forum and is dedicated completely to dart frogs. Pretty much everything there is to know about darts is there check it out!

What's the species? That will affect how you deal with the tads.

If you wanna get rid of a couple of the group I could help

good luck!