Problem with Zoa frag.

[Lurch72]

I have 3 frags of different Zoas in my tank. 2 seem to be doing quite well, open most of the time, one has added 3 polyps in the almost 3 weeks I've had them. One, however, never seems happy. It either doesn't open all the way or only about half open at once. I've tried it in several different spots. Lower flow, higher flow, lower light, etc. I've looked closely at it and I cant see anything on it that might be bothering it. Everything else in the tank is doing just fine. They are under Red Sea LED90s 70% blue 50% white. They were all open at the LFS when I purchased them. My tank has been cycled for 4 weeks and with fish and frags for three.

Salinity 1.024
PH 8
No3 8
dKH 8
Ca 420
MG 1200
P04 .015
temp 78

 

[ahiggins]

Do you have any pics of them?
Some true zoas are very finicky. Easy to get salty-pun intended lol
Others could survive nuclear fallout (probably )

 

[Lurch72]

Do you have any pics of them?
Some true zoas are very finicky. Easy to get salty-pun intended lol
Others could survive nuclear fallout (probably )

Sorry it took so long, I work 24 hour shifts. First pic is the one that never seems happy. This is about 2 hours after lights started ramping up. 2nd pic is another zoa that about 2 inches above this one on the same rock. The closed polyp is on the bottom side and always last to open.

 

[ahiggins]

It could be that the bottom one is a tad shaded by the others or any number of non lethal things. Honestly you frags look good