So I have a tough decision to make my Molly that is in my 35 gallon tank that just recently went through a nitrite spike is now looking very ill. He is laying at the bottom of the tank and is gasping for air, gills are very inflamed and red and he barely moves and only comes up for food every now and then. I have no idea what to do, should I move him into my 55 gallon that isn't cycled? I'm not sure if he is to far gone to help or if there is anything I can do to try and improve his condition. I'm really upset with myself for letting it get this bad and I'm just hoping there's something I can do. Any advice would be gratefully appreciated.