Barry, I do not know if you are on but I had 7 large squamosas spawning with in the last hour. The tank is 600 gal with a 200 gal refugium Now the larger Gigas and maximas are spawning. I can't see into the tank. I put large bag of carbon in refugium There are 50 clams in there, some small but all the larger ones are going crazy. The tank had a large number of SPS. Am I in trouble with this situation? I only have enough water made up for maybe a 60 gal water change. I did 100 gal last weekend and have not caught -up yet. Thanks