I have a 40 gallon long tank, with 3 fish...mated pair of pink skunks and a diamond goby of which I feed 4 times a week. But I heavily feed my "SPS" a mixture of rotifers, cyclopleeze, baby brine and a concoction of amino acids and bacteria everyday. Since doing this I have had great coloration, brown out colors that were introduced took on great color. In the past I was getting corals that would pale out or would get STN but havent had that for quite sometime, not to say that it cant or wont happen, just having better success with this method.