SPS white patches. HELP!

[Logitek]

Hi guys,

My seriatapora has been getting white patches recently, the polyp extension is still fine but they're disappearing at an alarming rate. I have other SPS but I'm not 100% sure whether they're going white too or it's just me seeing things that aren't there.

My params are as follow and I keep them near enough these numbers as best I can dosing mag, calc and alk.

KH: 8.6
Calcium: 420
Magnesium: 1305
Nitrite NO2: 0ppm
Nitrate NO3: 0.2ppm
Phosphate: 0.03ppm

Any advice?

Thanks

 

[minus9]

Has anything changed? Lighting schedule? New lights? New fish? Where are the white patches? Tips? Underneath? Any pix?

 

[Logitek]

As this picture states, this was about a month ago and it's worse now, this was after the lights were out by the way.

 

[Logitek]

Took this just now. Don't think there's been any growth in the last month either, very disappointed.

 

[Logitek]

Anyone?

 

[a6walter1]

Are the white spots in the shade? Or on the underside of the coral?

Could something be stinging it?

Do you have any fish that might nip at the polyps?

 

[Logitek]

Also I forgot to add all my fish are currently in a quarantine tank due to an inch outbreak and there's nothing stinging them as far as I'm aware.

 

[vinhle00]

If there are no fish look in to the possibility that they are starving. No fish poop no food. paling out.