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Unread 03/14/2009, 10:33 AM   #5
pecan2phat
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Join Date: Feb 2004
Location: Wallingford, CT
Posts: 4,990
I have read that the diameter of the plumbing will decrease over time but honestly, I have tanks running for quite a while and have never went to the effort of breaking down the pvc pipes to clean them.


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