Help! Rainbow infusion Paly closed up

[T206]

Hello Everyone,

My rainbow infusion Paly recently closed up and I am worried about it. I researched what some do for their Zoas but it seems there is a lot of conflicting information. I have tried different locations in the tank with no luck. It was doing fine then started closing/opening and now it stays closed.

Alkalinity 10
Ammonia 0
Nitrite 0
Nitrate 5
pH 8.1
Calcium 430
Magnesium 1350

[Dkuhlmann]

Pictures would help. Also make sure you don't have a tube worm or other creature that is there agitating it, or even a coral too close to it.