has anyone else have experienced this? i've done a water change, first in many few months, all my zoas seem to close up and shrunk. before everything was thriving. this isn't just happening to one colony but all the zoa colonies... while I was turkey basting some of the rocks, some of my eagle eyes zoas just floated off the rock. any idea what might be happening? only recent change i've done is add some kent ph buffer after water change. all parameters are good.
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