hey weileong, how does GAC affect your AT?? after reading your thread,i also noticed that since i started running GAC and rowa, my tank seems to me infected with ich...both my yellow and sailfin tang are in terrible state now..especially the sailfin..almost as bad as your AT...but both are still eating, and all eat an assortment of food, nori, pellets, flakes, garlic soaked brine shrimps...
should i turn off the GAC and rowa?? pls advise...thanks...