Is this your Hap. "Ruby Green"? Mine never made it to full term the first few times they held. But if you're already as far along as seeing dark fry, that's a great sign. If she hasn't spit yet, I would consider stripping her now. My last brood I stripped on day 16 and put them in a breeder box with an airstone and they did great. Is your net in the main tank or did you get a seperate tank for the fry? If she spits while floating in the main tank, they may become casualties to the other adults trying to eat them thru the net.