Thanks so much guys. I'm gonna try again. But I'm gonna try to get some money for some microworms, I want to try those this time around. And also if I can get some more money then I will be getting a replacement heater since it's winter. I could use a little filter too, but I think I did well without one. But believe me if I get some money I'm going to get a filter also. I want as many fry as I can get out of this next breeding attempt. I think they will do great together again, especially now that they've done it once and know what they're doing. I don't think that Pearl has an infection I just think she is marbled and that spot grew with her. I'm gonna do a bit more research on it though, because I don't need these babies sick.
Once again, thanks guys for the support.