Purple Hornets not opening

So nature of the beast I guess.

Mine do this too and last night only 1 of 4 were open. The night before 3 of 4.

The fourth has not opened in 2 weeks.
 
For some reason, every now and then, my 100+ polyp colony of Ring of Fire zoas all close up for a few days, then open back up. Not sure why, but they just do.
 
Mine are still closed so it has been two weeks.

However they are not melting away, I moved them to their final tank, and I have two new polyps forming.
 
Well I moved them up on the rock and one polyp and one baby are opeining so I hope things continue to improve.
 

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