Ok I have a female guppy and she is looking very pregnant. Or at least I think she is. She has a dark spot compared to others, she is looking rather blocky (is that a word?), she is eating food, and she is hanging out on the bottom of the tank, but her colors have gotten more viberant. I have the net already set up, but I do not want to plop her in there untill she is ready. How do you know when it is time??? TIA