Hi, I'm new and have questions about my daughter's goldfish.I bought them about 3 yrs ago, not realizing their rapid growth. I moved them from a small tank to 10 gals in Jan 2013, then was forced to buy a 29 gal a week ago because one had pink areas on his fin. Right after the move, the pink began to vanish but signs of ich developed. (I am treating it), but that's when the healthy fish started chasing the sick one. I bought a separator and I'm wondering when I can remove it. It has been 4 days now since the separation. There is no sign of illness any more. I 'googled' this post:http://www.aquariacentral.com/forums/showthread.php?98145-Sexing-goldfish-(with-photos)! Both fish, especially the sick one, are developing tubercles, so I'm guessing they are both males. Anyway, I need to know how long to keep them separated. thanks