You did the right thing by pulling it out, he's likely going to be fine. Fluke solve and Prazi pro have the same active ingredient, praziquantel. Did you take displacement in consideration as it looks like alot of rock in his setup. While most fish do handle praziquantel well, dosage must be adhered to very closely. I'm not sure of the level of praziquantel in fluke solve vs prazi pro either, and that's a consideration. His eyes look good and he doesn't appear to have a sunken belly, has he still been eating regularly? Changes in his appetite, like becoming extremely more voracious than usual, and cloudy eyes can also be indicative of internal parasites; so something to look for.