For lack of any other suggestions, I tried the Ruby Reef Ich Product on my daughter's Nano 12 gal cube. (couldn't see setting up a hospital tank) So far, so good. 2 treatments - 4 days apart. Only one spot left on the domino fish. Anemone still looks good and the tomato clown has shown no sign of infection. I can keep you posted. But I am happy so far. Thanks to North Coast Marines for a quick shipment!