When my lights turned on this morning I noticed right away that my anemone was all shrunk up and has moved deep into my live rock, not its normal spot. Then I kept looking and noticed my blue hippo tang taking his last breaths on my sand bed. I immediately removed him and began locating my other fish, all were accounted for and no coral looked harmed. Did a water test and ammonia, nitrate, nitrite all good, salinity 1.022, temp 78 ish, but did notice my ph looks a little low - 7.8ish. Is that the most likely cause? Do I need to remove the anemone or does it have a chance to recover? Looks pretty shriveled and mouth is wide open. Yesterday all looked good, did notice my coco worms werent all open and lively as normal but did not concern me too much.