Is my Clavularia ok?

[nikospsa]

Hello all,
2 weeks ago I added my 2 first soft corals to my 3 month old tank. I added one zoanthus and one clavularia. Zoanthus seems really really well. Unfortunately I can’t say the same for my clavularia. Two days now it doesn’t open completely. My tests are all ok. I have a little elevated alkalinity 10-11 but my ph is stable when I am testing. My salinity is 1023.5 .
any ideas? thank you.

 

[Jekyl]

Lighting used? How is your flow? Nitrate and phosphate levels?

 

[nikospsa]

I have a Blau mini lumina 54w working 12 hours 2 hours white 8 hours white blue 2 hours blue at 100% nitrate and phosphate are near 0.