Hammer White and Melty

[MeMyFishandI]

I noticed today that one arm of my hammer is looking rather like melted mozzarella.

Tank parameters are
Ph 8
Ammonia 0
Nitrate greater than 0 less than 2
Nitrite 0
Phosphate 0
Salinity 1.023

There has been one change in the tank and that is the addition of a new skimmer.

I am wondering if this is from damage after cleaning the tank? If so, how do I proceed? Let it take care of itself or prune it?

Thanks for your help and your time.

 

[EeyoreIsMySpiritAnimal]

I'm not sure what's going on with the hammer, but if you don't raise those nutrients (nitrate and phosphate), you're going to starve all your coral...

 

[MeMyFishandI]

I'm not sure what's going on with the hammer, but if you don't raise those nutrients (nitrate and phosphate), you're going to starve all your coral...

Yeah, very good point. I just gave them a pinch of reef-roids. Thanks for the reminder.