This past week I added 10 gallons of saltwater to my tank when I added my sump. Initially, the water was somewhat cloudy which I believe was a result of a poorly rinsed filter sock on my part and the next day, the soft corals in my tank were not opening as well as they should have been. 4 days later and my corals and anemone are back opening but my hammer, and two duncans are still not opening all the way. Both the duncans are excreting a yellow, pollen looking substance. I believe my hydrometer may have been off and my salt was either too salty or not salty enough. The water was mixed for 8 hours and was temp and ph matched. Is this yellow pollen the sign of a dying duncan coral?