i have the dreaded little red bastards in my tank and i know from all that has been said on here and other forums that they are bad but i remember reading someone's thread on here that he has them to and opted not to treat because he seen no ill effects from the little red flea bags. now even tho i have these suckers and i do have the interceptor tabs ready, my sps are vividly colored and showing good growth rates. i'm just from that train of thought that "if it ain't broke, don't fix it"