HF:
The green water is probably a good thing for the fry. I let my tanks get as much of that as possible before the fry are born. I also let a lot of solids build up at that time. There seems to be conflicting knowledge on whether the fry eat the waste from the mother. Some say yes, others say no. I personally have found that the fry grow faster if there is an abundance of solids from the mother at the time the fry are released, as compared to keeping the tank clear. I've done both ways. Within a few weeks of them roaming around, the tanks get to be very cleaned, just like a filtering system, till they get about an 1" long. Then it comes to an end.
I will agree with bcotton about the difficulties he mentions of having any fry in your set-up. To add to those thoughts, the mother gets very defensive when the fry are released, and can stay this way for weeks after. I could see the possibility that she will literally die from exhaustion defending here fry. That, or she will kill others keeping them away. I think it would go one way or the other.
