Most of your beneficial bacteria is located in your filter media. Don't wash it with tap, just rinse it in your old aquarium water when you clean it. I find that moving a filter with used media works fine for jump starting a new aquarium, just don't let it dry out. Bacteria multiples quickly and your tank with cycle very quickly with used media.

The freeze dried bloodworms are junk (problem is the freeze dried part.. don't use freeze dried foods they cause constipation) but wet/frozen bloodworms are fine as an occasional treat though they're not my top choice to feed to ACF.

I like to feed my frogs nightcrawlers (cut them with scissors if needed for more manageable pieces) once or twice a week along with Reptomin as a staple. They really enjoy live nightcrawlers, you'll see. Just remember if they are juvenile males you will NEED to cut the earthworms at the very least, in half otherwise you'll wind up with very fat frogs.

I'd suggest live black worms, but leeches often hitchhike in black worm cultures and it took me quite a while to get rid of the leeches so be careful of that. They're usually detritus eating leeches but I imagine a hungry leech is still dangerous.. I believe my frogs ate them but I did remove a few by hand.. If you can get black worms that 100% do not have leeches, your frogs will like them.