I have put him in a "hospital" tank since I got a new tank and tank mate on Saturday. I've had him since the end of February. I have done 50% water changes twice and cleaned the whole aquarium twice. The filter is a tetra whisper filter that uses carbon filter cartridges. I wasn't aware of...
I'm not sure what is wrong with Roy. About a week ago I noticed he was getting some lighter (grayish) patches on his head and down his back. Got him a new tank Saturday with a heater that shuts off at 78 degrees and he seemed to love it! Sunday he was hanging out at the bottom of his tank...