At the beginning of the year, I had a big outbreak of standard brown flatworms. I started Flatworm Stop and added a Coris wrasses, within a month they were almost wiped out. The purple stylo was always a fast grower, but most of the other's (acro + monti's) growth was stagnant the previous months. Things really improved. Growth and color improved across the board. The tank was healthy before, lots of coralline, but things went up a notch.
The credit probably belongs entirely to the Yellow Coris wrasse, but since it was working, I decided to stick with it.
On day 3 of the nem, I added a dose, and he disappeared into the rock for two days. I stopped dosing. It could have been a coincidence, but since he's been happy, I haven't restarted.