Zero made it. Don't know what happend. Two were dead on tuesday, two yeasterday, and I found the remaing one dead this morning. The water test's came back good, 0 ammonia, 0 nitrItes, <5 nitrAtes. The pH, kH and GH are still the same as the 75 gallon. I just don't know.
My only idea is that when the mother begrudgeingly released them, she hurt them tring to suck them back into her mouth. I have nothing to prove this, but the only thing I really have to go on.
It happens, a good life leson none the less. All I can do now is take what I've learned here and apply it to future spawns. That, and a whole lot more research into rearing the fy.