Hi, I have just been treating my Fish, Black neons and cardinal tetra, for Ich. I do have some Harlequin Rasbora but the seam not to have been affected. I have been treating them with Waterline white spot and fungus. I am now on the 7th day, last dose went in yesterday, the issue I have is that the fish still have spots, I was going to do a water change today, should I leave it for a few days to wait for the spots to disappear. I feel that the water change will remove the medication and not get the parasite when the spots come off, water has been tested and is good. Please help, Google is giving me conflicting info.