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Old 12-02-2008, 12:34 AM   #5
MsBeanCtr
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Join Date: Sep 2006
Location: Washington State
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MsBeanCtr has a stable aquariumMsBeanCtr has a stable aquarium
Read about clam feeding at this link. Reef Aquarium Forum • Tridacnid Clam feeding and the truth : General Clam Forum

How far is the clam from the light fixture? This may be the reason for the color change over time.
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