the first few times they spawn the eggs will probably die (it happened like 10 before I got it right) I wouldn't siphon them out most books recommend getting them to breed on a piece of Slate and than moving the piece of slate into a separate tank and you're supposed to not let them get out of the water but I think if you do it quickly its ok. I'm a big fan of letting the parents take care of their young, but Ive been concerned that if I did it the =y wouldnt be able to handle the daily water changes.
this batch of fry I :
moved the parents to a separate tank bc I didnt have a small tank for just the fry.
did daily water changes up to 50% each time (doing a little less now)
fed many times daily as many as I could
cleaned with airline tubing so I wouldn't suck out any fry
I probably did some other things too ill post later