Plerogyra loosing Zooxanthell

[Svein A]

Hi all
I have a little problem with my Plerogyra?. somtimes always in the evening just before the light go off, he starting open his mouths and out is comming brown threads. (Zoxanthells)
Next morning everything is ok, and the corall has a good growth. I'm feeding him directly 3 times a week with bbs (artemia)

I have placed him where there are just a little flow, and I think the water parameters is quite well.
Anyway, I think he has changed his color from white to the color you see at the picture.
I have red a lot of articles, but honestly I cannot find whats wrong with him.
Any suggestion?

Regards
Svein

 

[cmondo]

There isn't anything wrong with him, corals release zoxanthelle when they no longer need it so that is perfectly normal. And your coral is coloring up, that is good too.

 

[Svein A]

Thank's for your comment, and nice to hear
Svein