It is under a 48" outer orbit setup with two 150w 10,000k halides and two 130w dual actinics (which are burnt out at the moment). The halides are at least 1yr old. But i have a sebae anemone, horn coral, mushrooms, and a maxima under the same light with no problems, so i do not suspect lighting to be an issue. I did recently move the clam out of my old 55g setup into the 72g oceanic. In the old tank the clam had a rock to support itself with, this time it is just in the sand and is tilted slightly.
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