I have one fish in my 20 gallon reef tank, a beautiful coral beauty. I noticed ich two weeks ago and began treating with herbal treatment and water changes. I also tried fresh water dips. Nothing has helped and my poor Sulawesi and she (i just call her she) is breaking my heart. She stopped eating yesterday and is getting worse every second. It looks like the ich is eating her? because she's starting to look half eaten. She has just lodged herself behind a rock and isn't moving anymore. I feel like it'd be more humane to put her out of suffering....this sucks. I feel so sad for her. What do I do?