meat by product are not a bad thing to use... chicken is a no no... grinding up bones is perfect... composting is that composting... canadians crawlers need to be kept pretty cool they like the cold moist dirt to breed... best bet for them be a basement or garage in the winter and you should be good... africans require alot of extra care... if yor PH in the soil changes worms die... temp goes to cold worms die too hot worms die... P.I.T.A is what they are.... red wigglers well if you cant get them to reproduce(ill edit myself)... now if you wanted to go a better way... then buy worms in bulk get a pinky pump and stuff the worms with pellets,shrimps, silversides clams cockles you name it add it... re freeze them and add a power head to the bottom of the tank for when you throw them in...