I think I'm losing a War Coral. Help?

[shollis2814]

First the picture

The dead polyp on the middle left has been there for over a month. The two larger spots on the bottom have popped up over the last 24 hours. The small polyps at the bottom have been increasing in size and 'turning' to face the light more over the last couple of weeks.

The only major change I have made is to increase the intense part of my photoperiod by about 15-30 minutes over the last 3 weeks (I have Orbit Marine LEDS that run from 12-8. I have Stunner LEDS that come on from 2-6 and I have slowly backed that up to 1:30-6 to promote some growth.

SG: 1.025
Nitrates: 20
Alkalinity: 10.5 (started turning at 10, went completely yellow at 11)
Calcium: 440
Magnesium: 1300

I target feed Reef Chili, frozen, and phytoplankton 2-3 times a week.

What's causing this and what should I do? I have another war coral on the other side of the tank that seems fine.

 

[pga7602]

I would dip it in lugol Iodine to stop that infection. Are you able to move it to where the other war coral is located?

 

[shollis2814]

I have some SeaChem Reef Iodide on hand. That wouldn't work as a dip, would it? Isn't Iodide much more inert?
I can move it closer. IF it is having some sort of infection, why would I do that? Won't I risk infecting the other one?

 

[shollis2814]

So, today when the lights came on, they look normal. Could that have been them feeding? I'm confused.