Bubble coral problems

[Subuchef]

first off happy thanksgiving everyone, ive had this bubble coral since i started my tank and when its open its huge and beautiful, but unfortunately the past few days it has not opened one bit past this stage heres a pic, im going to do a wc today and maybe dip it just to rule out anything attacking it.

 

[Oscaror]

first off happy thanksgiving everyone, ive had this bubble coral since i started my tank and when its open its huge and beautiful, but unfortunately the past few days it has not opened one bit past this stage heres a pic, im going to do a wc today and maybe dip it just to rule out anything attacking it.

What are your parameters?

 

[Subuchef]

Checking right now

 

[Subuchef]

Ca 450
Dkh 8.1
Mg 1200
No3 5-10 im really bad at reading nitrate tests
Temp 80-82 its cold out and my room is the coldest on the house so temp drops a bit