Luckily this has only affected my 10 gallon glofish tank, I have a test kit (API Master) and all my numbers are ok, ammonia a little high, but I have been doing daily water changes. The medication I used for about 3 days, and did not see any improvement, fish were still listless and had even more spots. So I started increasing the temperature gradually, it is now at 79 degrees and added salt approx. 6 grams per gallon.
I'm just relieved that this is not happening to my 40 gallon tank!