all my euphyllia does that all the time. sometimes the bubble burst and shows the skeleton inside, but usually close up and heal up in few days.
maybe it does that when it's forming a new head?
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150DD mix reef with 90 gal sump and 40gal frag tank
purple tang, sohal tang, yellow eye kole tang, fairy wrasse. cleaner wrasse, leopard wrasse, and misc fish.
GHL Mitras 6200HV X 2, MP40 X 2, MP60 X 1, tunze 6095 X 2, Vertex RX6 calcium reactor, Bubble King SM250, Aquamaxx bio pellets reactor, Profilux 3
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