Help breeding night crawlers

[Locascio]

yea good luck its not easy

[CaterpillarArts]

Is there any reason why you couldn't use red wigglers (are they okay to feed to frogs?)? I've found them to be pretty easy to get going. I started with 1000 worms to get a tub going for my puffers and they just seem to keep themselves going as long as I don't deplete the colony too quickly.