I will give you some microworms. Pm me and i'll give you my address. While you are over you can see my fighter set up.
I have fed microworms for 2-3 months and still sometimes feed them to my 3month old babies. Microworm's can be fed at around 3 days after hatching, that should be when they are free swimming
As for filters, when the fry are two weeks free swimming(can swim horizontally), run an air pump slowly in the tank.
I had a big syringe with air line tubing attached to suck up waste. Slowly add more water till it reaches the top of the tank. Don't stress about removing and replacing any water yet.
http://bettysplendens.com/articles/catv ... ?catid=856
I found that website very helpful
HTH, Remember to PM me about the worms