Rhodactis bleaching

[osk4r]

Hi,
I have a problem with my rhodactis, it has faded and shrunk. It has lost the purple corol. It used to be the size of all that rock. Other corals look ok. nothing has changed recently, stands. in the same place, same light settings. Aquarium 64 liters, AI Prime 16HD, dosing balling.

 

[shakacuz]

water parameters? tank inhabitants? what other corals are near it?

 

[osk4r]

I completely forgot to include the ICP from Fauna Marin which arrived today. On the left is euphyllia parancora and on the right is xenia. The aquarium has clownfish, Nemateleotris decora, Chrysiptera hemicyanea. Other corals look ok