Zoas turning inside out please help

[Burton182]

For 4 days one colony of zoas has turned inside out. They have been like that since. Today I noticed another colony same type and right next to the original colony had started to do the same thing. They are both eye of rah.
I haven't added anything new to the tank for two months. They were doing great up until recently. growing and colors were great.
Everything else seems to be fine.
I have like 200-250 different zoas/palys in the tank and all others seem to be fine but it looks to be spreading.

 

[ourcoralreef]

How big is your tank
What are the parameters
Are you dosing anything
What kind of lights do you have
What fish do you have in the tank

 

[Burton182]

55gallon tank
2 Radion xr30w gen 3
2mp10s
Dose b-ionic 2 part
Will check levels tomorrow. I did a water change yesterday when I noticed.
Salt is Red Sea coral pro
Fish: Midas blend, pair of clowns, algae Benny, pair of cardinals and yellow tang

 

[ourcoralreef]

Do the fish look healthy

I had this happen to me to on 3 different colonies 300+ polyps each colony they were all in different locations in the tank all purchased at the same time and same dealer all happened a week apart about 15 polyps survived on each rock
These are the issues i had , high nitrates, coral beuty though i never saw him pick at them still a possibility and i saw a sponge like growth white yellow and black all separate it was only the zoas that were affected i had hammers frogspawn ricordias sponge sea whips acans and more that were all fine i think the rocks had some bad bacteria on them
And from the info you gave me im thinking its the rock as well i would recommend removing the polyps from the rock and placing them on a new one i would also leave them in some iodine with water 99-1% for 5-10 minutes then placing them back into your display

If anyone else has an opinion on this let me know because im still verry curious the exact reason this happened

 

[LongIslandAndy]

Check your DKH (alkalinity) Red Sea Pro has pretty high dkh and if your dosing alk it might have spiked the alk. They don't look sick