I know its spawning and I read that they do this under stress. I just got him today so Im hoping it was stress from moving him. Plus my tank has iwasaki bulbs that have a lot more par than the 20k bulbs he was under. You think the higher par and moving from one tank to another could make him stress? After seeing him spawn I moved him to the side of the tank where the light isnt as strong. All my SPS are doing great as well as the livestock. My nitrates and phosphates are zero. My alk is 8 and I didnt test calcium but Im sure its over 400 as usual. I also drip kalk.