The corals are reacting to the small particles of the tablet as they would to any other small particles that suddenly started to
blow around in the water. Find ground flake food might have the same effect. As for polyp extension, there is a beef flavoring
in the tablets to stimulate a feeding response. Other polyp extension is due to the fact that the bugs are not irritating the
coral so much and they are loving it.
I hope the acro crab makes it, but, if at any point you can capture it and
get it into fresh water, do it. They don't survive all 3 treatments even if they make it through the first one.