It's not ick. The white spots come and go and are never in the same spot, they only are in one spot for a few hours, seldom see them in the same spot the next day. I think it's small flakes of crushed coral from the bottom as he often take mouth fulls of sand to get the algae. I have a new tank (going on 3 mo.) and I used tap water before I got my RO so I have plenty of algae.
I may have solved the head scrapes but not necessarily solved the problem. Today when I went over to the tank and watched him he would swim screaming fast to the back of the tank and do his this is my territory thing with his tail at his reflection in the glass. I have a dark background so he sees him self there. So maybe he is banging his head on the pipes or something at the back of the tank as he defends his territory against his self.
Thanks