From what I have read, TTM only works on Ich. So if you are not 100% percent sure it is ich, you may be wasting your time with it. I wish there was treatment that worked for everything. I tried Hyposalinity and it didnt work, so in theory, I didnt have ich, I had velvet because it didnt work. The Chloroquine Phosphate worked so far, but is very harsh on the fishes eyes.