Another thing you can do is buy the concentrated garlic, and over feed. Fat fish are happy fish. IE I usually feed once a month or so... when fish get ich I usually will feed every day big portions. Also I usually soak the food, rods food in my case, with the garlic solution, usually 10-15 drops ,let it sit 5-10 minutes, then mix in tank. Also keep lights on actinics or off, will help keep fish relaxed and remember..don't stress them, that'll make it worse.