what I did was buy a 10 gallon tank with florescent lighting, airpump, sponge filter, heater, and java moss.
I placed the submersible heater on the bottom of the tank. I then filled the 10 gallon with 5 gallons from my 20 and placed gravel in there as well. I waited 20 min or so for the heater to get used to the tank then turned the heater on. Next time I do this, I will not add the gravel. I think it was better to just run an air stone instead of a sponge filter in the beginning as well.
I then took the 12 eggs or so I had and placed them into the 10 gallon. I added 2 drops of Methylene Blue per gallon and just maintained the same temp as my 20 gallon.
This produced about maybe 8 babies or so the next day. Water changes were done after hatching. Once hatched, i brought the water down to about slightly near the level of the heater (leave some room so you can do water changes and not expose the heater). I then added the java moss at this point.
I waited a couple days more and then started feeding them liquidfry (for egg layers).after daily water changes and removing debris, I finally ended up with only 1 weak one
I dunno if it's alive this morning, but next time these eggs come, I'll be better prepared I think. no gravel at all. I think some may have died in the gravel but I don't know.
That's all I can offer at what I did. I probably should use a bredder net next time and once they hatch, bring the water level down.
hope that helps on my experience
-Aoi