Any idea whats happening to this sps?

[kevsqn]

Someof the parts became white. Other sps seem fine though. Parameters are
Nitrate 0-5
Phosphate 0.08
Mag 1480
Ca 460
Alk 7.3
Ammo 0
Nitrite 0
Nitrate 0
Salin 35 ppt

 

[Crabs McJones]

Can you share some pictures of the coral in question?
First thing I'd like to ask is how to you supplement your alkalinity and calcium? And what lighting do you have the coral under? Was it dipped for pests before going into the tank along with other corals?

 

[DivingTheWorld]

Could be lots of things, but based on parameters alone, Nitrate of 0 never seems to be good for sps health.

 

[Kmsutows]

What lighting? How high up in the tank? What's your light schedule? Pic?

 

[kevsqn]

Oops forgot to upload the pic.
Lights are recurve by maxspect.
Around 13 to 15 inches from the light
I dose aquaforest 123

 

[Reefpuck]

I usually saw that when I dosed too much alk to quickly.

Newly added piece?

 

[happyhourhero]

Is it close enough to that lps to be getting hit at night by a sweeper?

 

[Flexin]

Is that a bubble coral in the bottom of the picture? They are aggressive and need plenty of room.

 

[kevsqn]

The bubble was just added last night.
The sps was already sowing signs a week ago.

 

[Flexin]

Like others said, so many things can go wrong with an sps.

Give that bubble plenty of room. I have one and it killed torches down flow from it.