Are you aware that dwarf angels will often pick at corals? Some will take a liking to certain corals, and will kill them from nipping. They are hit and miss in reef tanks. Some leave the corals alone completely, some nip at only some corals, and some are holy terrors! Some will also be fine in the reef for a long time before they start coral nipping.
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~ Mindy
SPS fanatic.
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