Remember: IF you want to treat it with meds, DO NOT treat it in your main tank especially if you have live rock and inverts. Copper WILL kill all of those. Treat them in a quarintine tank and be sure the amount of meds you put in and do your water changes when needed, best would be hypo and feed them high quality foods. I would still try the garlic guard though. It really does work, quite a few others will agree with me on here. I've tried the meds before and don't really care for it, plus it did not work on my butterfly, it went away and came back, butterfly are picky. If the garlic guards don't work, it would be good to try hypo. Good Luck!!!