Hammer coral partially closed up.

[bmelvin20]

I noticed last night that a few heads were closed on this hammer. I thought I would check it tomorrow and see if they are still closed. Well they are. I have not added anything to the tank in months. And this colony is over 2 years old. I noticed little brown specs on the flesh but can’t get a good id on what it is. Should I remove and dip it at this stage or give it another day.

Alk 9.5
Cal 450
Mag 1220
Salinity is low at 1.023

 

[TX_REEF]

anything change with lighting, flow or water chemistry recently? It's odd that only the top and center heads are closed up, makes me wonder if they're suddenly getting hit with more flow or light

 

[raythereefer]

Is it hosting your clownfish and they are bothering it ?