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The reason they pulse is to get water moving around for more oxygen. Under low flow, there is less dissolved oxygen/ml, so pulsing increases. Likewise, there will be more pulsing at 80 degrees than at 75 degrees because warmer water has less dissolved oxygen/ml. Lights heat up the water so pulsing will increase. I don't think they photosynthesize because otherwise they would be green.
Look left. Above "2011" there is a square foot of Pulsing Xenia. Above the yellow tang over "Date" there is a square foot of
Pompom Xenia. Over the "Feb" is a colony of Blue Xenia.
Last edited by bull shark; 10/09/2014 at 10:22 PM.
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