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Stylophora base gone from yellow to brown. Any ideas? Under Hydra 52HD. It's the typical green polyps on yellow base but now it's green on brown. Any help?
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That's it.Well, corals that are rapidly growing will often exhibit a brown color. Also, areas of colonies that are shaded by other branches or point-source lighting may develop a different color due to lower lighting levels. If the polyps are extended but just a different color, it's probably not an issue. I'll take a look at the pic when you post it.