The gorgonians that are photosynthesis are more easy to deal with. (At least those I have are still survive after 2 years). Try to avoid those non-photosynthesis, particurlarly the sea fans which require high water quality, heavy and frequent target feeding a day = more nitrate. I used to have a few pcs. of the non-photosynthesis species only survived for 5 to 7 months. At first, I thought they were doing great after a few months and actually they were suffering. As a conclusion to me, no more sea fans unless I'll start with a new system particularly designed to house them. HTH
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