Hammer Corals growing white skeleton

[Angel_V_the_reefer]

Hello guys ! So I have noticed my hammer corals growing a sort of white spots on its side, one of them growing a skeleton on the actual flesh part of the hammer itself, I was wondering what is this and why is it making my coral unhappy ? My parameters are all at a stable level, I just bought a dosed for all so I will be adding that. My nitrates are super low at .5 ppm for an LPS tank, I will do less volume water change to help that out however. I do have higher calcium and magnesium at the moment from an unknown source that was added to me reef. They are however dropping to normal range

nitrates : .5ppm
Nitrites : 0ppm
Alk : 8.5dKH
Calcium : 560ppm
Magnesium : 1660 ppm
Ammonia : 0ppm
Phosphates : <.03 ppm
pH : 8.15

 

[Angel_V_the_reefer]

I meant to say I purchased a doser**

 

[ZoWhat]

Calcification from tiny featherdusters most likely. It's a non issue

 

[JGT]

Hello guys ! So I have noticed my hammer corals growing a sort of white spots on its side, one of them growing a skeleton on the actual flesh part of the hammer itself, I was wondering what is this and why is it making my coral unhappy ? My parameters are all at a stable level, I just bought a dosed for all so I will be adding that. My nitrates are super low at .5 ppm for an LPS tank, I will do less volume water change to help that out however. I do have higher calcium and magnesium at the moment from an unknown source that was added to me reef. They are however dropping to normal range

nitrates : .5ppm
Nitrites : 0ppm
Alk : 8.5dKH
Calcium : 560ppm
Magnesium : 1660 ppm
Ammonia : 0ppm
Phosphates : <.03 ppm
pH : 8.15

Appears to be spiorbid worms, no worries.

 

[Angel_V_the_reefer]

Appears to be spiorbid worms, no worries.

Spiorbid worms ? What role do they play in a reef may I ask ?

 

[Angel_V_the_reefer]

Calcification from tiny featherdusters most likely. It's a non issue

Featherdusters look big on my google research