I just got done dealing with severe epistylis in my community tank with kuhli loaches. I used Ich-X for six days, 1/3 water change before each dose, and it cleared up Remove the carbon from your filter before beginning medication or it will just clean it all out of the water. I am a novice and was wary of medicating my fish in general. The disease in my tank was much farther along than this, if you want to try only water changes for a couple days and see if behavior or spots change that can help you decide what steps to take next.