Hammer coral looking bad

[crivero70]

I am new to this forum and it is my first post. I decided to add this post because practically overnight my hammer Coral has started to recede and I don't understand why. My other corals are doing fine and I have changed none of the parameters (lighting, water quality, salts, etc). Does anyone have any suggestions on what I may try? Could it be that as my corals are growing I need to start supplementing ( which I do none of)? It looked absolutely beautiful about 2 weeks ago and has been looking like this ever since. I have not seen it get any worse but I have not seen it get any better. Any suggestions are greatly appreciated.

 

[BaysEndReef]

Welcome to R2R! Glad to have you! What exactly did your numbers look like when you tested?

 

[crivero70]

Ca 400
10 dkh
1290 mag
PH 8.0
Temp 77
Salinity 1.025
Phosphate, Ammonia, Nitrite, Nitrate 0

 

[rob s.]

it all looks good. Any chance you have some unwanted pests on the hammer. Maybe a dip will help you out...Mine do that occasionally but never for more than a day or two. Good luck and welcome!