Hammer coral not opening!

[finley]

I have had this hammer for about a month and when I got it, it opened up perfectly but now it won’t open at all, it has been like this for the past few days, any ideas ?

 

[Uncle99]

Start with water chemistry.
What are your parameters currently (especially nitrate/phosphate) and how long have they been stable?

 

[EUPHYILLAADDICTION]

Start with water chemistry.
What are your parameters currently (especially nitrate/phosphate) and how long have they been stable?

I second this , alk, cal , nitrate and phosphate play huggeee factors ! Aswell as lighting and flow !