heh, heh, heh,
one of my favorite debates, in a reef system or a fish only with fish that live off plankton, definitely a do not use, b/c they kill many things, one of which is claimed to be ich, but there is not enough evidence that they rid a system completely of ich, besides, proper care can and wil go much further in disease and parasite prevention, in over 20 years i have never even seen a case of ich, in fact until recently i have not even seen it with my own eyes(that was in a lfs), ifeel quarentining and hypo and proper care go much further and are much cheaper AND do not harm your little biosystem by killing off bacteria you want and plankton you also want in the system
but there are others who will disagree with me, this topic has been debated many times here and always has the same outcome, good arguements for both sides