Mark the progress is promising nice work. I agree with upping the water changes too. But on another note I know this is a pretty new tank but have you thought of maybe making this a sumped system and adding a coast to coast overflow box on the back? This tank would look so sleek without all the equipment and returns inside. I really love the size and the rimless, but any how keep up on the WC's until you figure out a stable schedule and zero in on your tank parameters.