I have no skimmer, so bubbles are no problem, but here is a link mentioning bubbles. You can find it under Myth #14. Enjoy. 
http://reefkeeping.com/issues/2004-01/eb/index.htm
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Bob
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To be loved you have to be nice to people every day - To be hated you don't have to do squat.
---------Homer Simpson--------
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