OK, I've done this way too many times to count. I'll tell you how I do it.
First, I keep my males in jars all the time except to breed. Females reside in a group in a 10gal.
After conditioning, the female should have a white puss nodual on her anal vent, the pair is ready. I condition with live BBS and froozen BS and froozen Blood worms.
I place the male in a plastic sweater box 2/3 full with a length way cut styro cup. I let him in the breeding container a day or so and he should build a small nest. Then put the female in his jar and fill it so she can get above the container water line and place the jar in the box with the male. He will go absolutely nuts, but nobody gets hurt. Once he blows a large nest release the female, but put the jar back in in a back corner so she can hide behind it.
Once they spawn, and you will know because he will be tending the nest and she will be behind the jar, remove the female. After the eggs hatch and he loses control take the male out.
I use green water-Old aquarium water with the poop I siphoned on the bottom in a jar in the sun for several days. Add a few snails to speed up the process. Feed green water until water is tinted. Add about a 1/2 cup a day. After three to four days start them with a few bbs in the mix. Within 8 days transfer the fry water and all to a 10gal tank. If four to six weeks you will be sorting into cups. Use and eye droper to feed bbs.
Hope it all works out for you. Be careful with the Infusoria, it can tox out the water with little notice. Green water is always the way to go.