Just came back from a week vacation with my tank in the care of a friend. Everything looks good except for these odd looking shinny bulbous things in one of my zoanthids colony's. I first thought it was bubble algae and tried to suck it out but it was very solid. So I took some pictures...the corals seem to be retreating around it and the ones not right next to it looked mostly okay before I started poking and prodding.
Please help, and thanks in advance.
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Please help, and thanks in advance.
Sent from my iPhone using Tapatalk