I thought I was doing good vaccuning my tank. Evidently I stressed the fish. A day later my gourami was just acting strange. It didn't eat that I saw that whole day. The next day I noticed a spot that looked like fungus. (Picture below) I posted in a precious forum but I didn't get a response so I made this new forum on the unhealthy one. I added fungal med that day. Came back that night and the spot was gone. This morning it still didn't eat and then this evening the spot was back??!! Put the rest of the dosage in (2 tablets per 20gal and I only added one tablet the first day because I've had luck with that before if I caught it early enough) and now I'm just waiting. I have salt added to the water o keep disease down and all the rest of the fish are acting and looking fine. I really hope he pulls through. Any comments or suggestions?