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Old 10-24-2013, 12:32 PM   #11
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I'd say your Duncan is wanting more light. Move it up some in the tank. This is especially true for the other Duncan you shaded from the light. A 4 bulb t5ho can support easier Lps like this, it just needs to be mid range in the tank. This should begin solving the color issue you are having as well as see more extension from the tentacles on the polyps.

Side note, how is the flow in the tank? These guys like their tentacles to wave gently and it doesn't look like they get to at all. Increasing flow may also be of benefit.
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Old 10-24-2013, 01:02 PM   #12
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Just for you to compare here is my Duncan.
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Old 10-24-2013, 01:18 PM   #13
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They are called walking dendros because in nature they form a symbiotic relationship with another invert (I beleive a type of crab) and "walk". The specimens we have in our tanks wont actually move. I have seen walking dendros in a similar coloration to duncan's and in bright green. If I was you I would be happy it was that because they are a pretty new and generally expensive peice
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Old 10-24-2013, 01:21 PM   #14
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Apologies its a symbiotic relationship with a worm that does not survive in captivity.
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Old 10-24-2013, 01:23 PM   #15
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It isn't a walking dendro...that is a duncan that is upset and quite possibly working towards bleaching out. Walking dendros don't have a stalk or multiple heads.
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Old 10-24-2013, 01:44 PM   #16
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Ok thanks for the info guys I'll mocmve them up and see how they do
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Old 10-24-2013, 01:48 PM   #17
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No problem. Duncans are one of my favorite corals in my aquarium. So much I have 2 of them, just of different coloration. My largest is a green/green just like yours. It is normal for it to glow some under the blue actinic lighting. Yours just needs a tad more light and it should do well.
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Old 10-24-2013, 01:59 PM   #18
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I moved them up and they look happier all ready
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Old 10-24-2013, 02:18 PM   #19
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That's great to hear. Is there more flow in that spot out of curiosity?
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Old 10-24-2013, 02:29 PM   #20
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Not really it is a more open area though
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