Sun Coral Tissue Stripping

[CalebWBrink2000]

As the title suggests, the tissue between the polyps on my sun coral is stripping.

Now, this is odd, because I feed it well every night and it receives adequate flow.

Any suggestions?

 

[Scott.h]

How low is your phosphate?

 

[CalebWBrink2000]

How low is your phosphate?

I'm currently not at home (pics were already taken prior as a point of reference for myself), so I can't test it right now. However, I have very little algae growth, so I would presume that it is within an acceptable range.

 

[Scott.h]

There are a few things that might cause tissue loss. If there isn't enough phosphate in the water due to gfo that could contribute.