I would be inclined to agree but I have experienced the opposite. I had a powder blue tang that would develop ick. If I soaked nori in the seachem product before feedings the ick would go away. As long as I continued doing this the ick would not return. I understand the ick cycle, how it shows up and then seems to go away before coming back even more. This was not what I was experiencing. From what I've read however, long term use of garlic will eventually cause equal or greater problems because it is not a food fish naturally would be eating.