Is it like an irridescent green or is it a through and through solid green? In theory, iron levels control green pigmentation in SPS, but it should look more like an irridescent green. So get a test kit for iron and see what it's at, it may give some insight. Post the result, this would some cool little research to see what is causing what.
Another possibility, though very unlikely, is uptake by your corals of a green-pigmented zooxanthellae clade that may be residing in your water column. Do you have a really green (naturally, not induced green) colony that could be spiting a green clade out into the water column? It's an out there idea but this is an out there kinda thing...
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03-25-2011, 07:16 AM
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