Originally Posted by nmbr1ddy

I was so happy to have the clown loaches I had watched them closely. I tested regularly and again once I saw the spots. All tests were in the ok or safe range ph7.2-7.8, hardness between 75-150 closer to 75, nitrate(n03) 0 and nitrite (no2) at .05 or less. The spots appeared overnight.Only change to routine was hikari algae wafers for 2 days prior to spots. When I applied the quick cure it was at about half strength diluted in a quart of the water change. That's why I was wondering if it was something other than "ICK" and if so how should I treat the whole tank before replacing Clowns. I have added the quick cure again after 48hrs with water change, and will do so wednesday as well. Again... No other fish affected.

Thank you all for your replies.