Yeah I went all over the tank to try and find anything that may have caused it but it is a very simple tank with a few fake plants, a stick, water dish and some substrate. It is a quarintine tank until I can get her in with my other RETF. That is why I am assuming that maybe it was there when I brought her home from the show. I wonder if the moss in the container I brought her home in was oversaturated and dirty? It was about a 1 hour drive home. Not sure how it happened, my main concern now is to heal my sweet little girl!