I agree with naesco. Another thing to think about would be to maybe soak any of your new fish's food in garlic. Just to help their immune system after the ich outbreak, even if its all cleared up, To prevent anything. Better safe than sorry
My neon goby had a pretty bad case of ich, so I bought some garlic guard and soaked his pellets in it. He was cleared up in about 5 days, and has been fine ever since.