WOW! Sounds like you sure had a rough time there. It turned out the it was a fungal infection of some sort. I bought a Tetra preparation (don't know the name off hand, box is two floors away) and within 24 hours the fish not only looked better but acted so much better. Tonight they got a water change of about 1/3 of the tank water (total is 45g) and then the second dose of the meds. I have no idea how they got the fungus. They didn't have it when I left to go out of state for 6 weeks but when I came back I started to notice something was off. I'm not sure what my mother did or if she stressed them somehow or what. She swears she didn't add any new fish, but usually when I am gone she goes behind my back and buys new fish and doesn't qt them and just puts them in her tanks. As an aside, I also caught her pouring Prime straight out of the bottle into the tank. She didn't use the cap to measure or anything. Needless to say she got an earful but she's 65 so what can I do?
I appreciate your feedback and advice. I really wasn't sure if the goldies could handle the heat and I was reading conflicting things on other websites. Now I know for certain that they can.