Okay so I thought that my pictus catfish had ick since there were some white spots that developed on his body. I treated the tank (90 gallons) with Quick Cure (it has Malachite Green and Formalin in it). I tried to raise the temp in my tank with another heater but it still just stayed at 78 degrees. When I added the treatment my sick pictus was acting stressed but he has been acting that way for a few days until I found the spots. After treatment my other pictus started acting stressed. That all was yesterday. Today both my pictus were dead and my dwarf gourami I also found dead. What is going on? I am going to do a complete water change. I took a test on the water and eveything was fine.