You have been saying that "Garlic line" as long as I have been posting on here Cav, and the ONLY evidence you have to prove your statement is related to some Atlantic Salmon or something like that.
I stand by my statement 100% that Garlic does help fish and I have never seen any negative reaction to it. I have spoken to Steve Tyree, Randy Reed (of Reed Mariculture, makers of Articpods, Rotifeast, etc), and Anthony Calfo in person on this very subject, all 3 I highly respect in this hobby, and all of them said it is most definately beneficial to the immune system on the fish we keep in this hobby.