Update. I may have found the cause of my rtns. Zeo method is definitely different from other methods of reefkeeping. On my zeo dosing, everything has to be followed pretty much to the tee. On my tank, the amount of carbon that I needed is 3/4 of a cup that is place in a filter sock and placed in a passively low flow area of my sump. This bag is kneaded 3X a week. I mistakenly put 1 3/4 cup of carbon. Way too much for the zeo method. Too much trace elements are being removed. I put in the right amount now and will see what happens in the next few weeks. Hopefully it will be ready for the April meeting.