So a few weeks ago I hurt myself on accident and the doctor said I had to stop lifting heavy things until I had fully healed. Well, 4 weeks later, I have finally healed. But during those 4 weeks, I couldn't do any water changes on my Oscar tank. He was in a 55 with a big rainbow loach and a few kuhlis (he doesnt bother them). The side of his head developed a white patch and I'm worried it may be hole in the head. What can I do to fix it if it is? Btw, he managed to scrape his scales yesterday when I was moving him so now there are white patches on him where a few scales are hanging off or gone. Anything I can do to help him with this?