All of my seritipora and stylophora closed up

Pseudo69

Member
I have a 60g cube and I am seeing all of my stylo and seritopora clamped shut. .All of my other sps are okay . My parameters are fine and I did a 30 gallon water change.

Paramaters are
alk 10.5 dkh
cal 410
temp 79.3
nitrate .04
ph 8.11
phos .02
mag 1550

What could be wrong?
 
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