sorry for the slow reply. I let him stay in the tank, and has actually just had his second batch since i wrote this. He is now prego again. He is having them on the 13th day. I just heard that if i drop the temp in the tank he will hold the babies longer, Do you know if that is true. If not i will be spending the day after Christmas tending another batch. I still have 6 left from the first batch. I started with over 100 and kept only 30. I was afraid i dident have enough rotifers to keep all 100+. This latest batch i will be keeping all of. Anyway. what temp would you suggest i keep the big tank at?