I have been battleing this nasty parasite for about 2 weeks and my advice to whoever who has ich in there tank. Take all ur decor out and set it out in direct sunlight since ich cannot stand the heat. Scrub the walls of ur tank then do a 50% water change turn up the heat in ur tank as well and u should be clear of this nasty parasite. The reason y u take out ur decor is because when ich comes off ur fish it attaches to anything in ur tank so therefore taking out ur decor and gravel it will have nothing to grow on. Trust me it really does work.