stop feeding the cyclopseze for a couple days let it get settled chek water temp ph amonia and nitrtate levels asap.that anenome is either a sebae or a candilactus. stores always mismark these when they are severely bleached this way .they need a good water flow but not pounding on them .I did find my sebae to prefer cooler water 77-78 degrees
i cant tell by the photo if its innerads are falling apart
best water levels for this ph 8.3, sg 1.024 ,amonia 0 nitrate 0-10 0 being best no higher than 10, nitrites0 calcium 350-450.i really suck at the alk (had to check my test instructions) lol 2.40-4.43 ,DK 6.7-12.2 i hope this helps