I'm considering starting a Canadian nightcrawler colony for my pacman. He/she is currently eating 3 nightcrawlers a night. So at $3 a dozen I'm thinking I should just start my own colony. Plus, I plan on acquiring more frogs in the future. (There are several on my wishlist!) I want to make sure I understand everything about this little adventure before jumping in.

I plan on starting out with 250 worms in a rubbermaid type container. It's my understanding that these guys do best in cooler temps, which our basement will be perfect for. I have 3 guinea pigs and therefore have plenty of veggies on hand for our little worm friends. I worry about what's safe for them to eat since my frog will be eating them. Here are my questions:

Would chemical free peat soil be appropriate bedding or is there something better?
Can I throw in just any food stuffs? Like leftovers from dinner, including meat?
Would treated tap water be best for keeping them hydrated?
How often and how much should I feed them?

Thanks a bunch!