Hi, last two weeks my suncoral has not been doing well. Their polys has not been opening (even when I spray brineshrimp juice at it). Also observed that one colony of the polys have back stuff(maciam like aglae) on the polys. Last two days was worst, ot start spreading to surrounding polys too. When I use a satay slick to scrape of the "black aglae", I realise that its something like dead tissue. Anyone has similar experience.
PS: It was feeding well when it was at my two feet tank, Now it is my new 4 feet(three weeks old), its not doing well.