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Old 02-17-12, 05:35 AM   #16
Plantman
Lurking Renovator
 
Join Date: Feb 2012
Location: Angola, IN
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I discussed buildup with my service tech. My filter has a slimy coating when I clean it. He said it is iron bacteria. I told him I clean my filter about yearly, but it is never completely plugged. He said I must have good low-iron water and will probably never have a problem. They do occasionally clean exchangers by flushing with acid.
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