Mine is about 5 years old. Still gets it every once in a while, when he/she is stressed out. The BEST simple advice is this: If the fish is eating and fat, don't worry. Too much. Make lots of greens available to it, and all should be fine. Garlic may or may not help. I use it, just in case it works... But, to me it's like treating a cold. Let it run it's course, and it will be over in a week. Treat it, and it will be gone in 7 days...