I usually avoid any sort of live feeder fish unless it is a last resort due to the parasite risk, but I was wondering... If I bred my own guppies, and treated the first generation with antifungal/antiparasitic fish meds, those would be safe feeders?

I've been looking at getting an African clawed frog, which got me thinking of healthy prey items for it. Then I started thinking it'd be really nice if I had a litter of babies not to have to worry about the icky things that hitch rides on pet store guppies every time one was a finicky eater. This is still a half-formed idea at the moment since I have neither the money nor time to set it up, but I'm thinking I might be able to get it up and running by summer.
What do you guys think? Anyone else tried something like this?