Hi all. I am having an issue in my aquarium. Recently, many of my SPS
(mostly montis) have been going south. However, I have noticed a bleached spot on an acro as well. Nothing in the water chemistry, etc, has changed nor has anything been done differently in the aquarium. I have not seen anything (and believe me, I have been watching) out of the ordinary in the aquarium.
Does anyone know of any common culprits (ie parasites or predators) that would damage coral like this? TIA.