Thread: Rain
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Old 01/03/2008, 07:07 AM
Randy Holmes-Farley Randy Holmes-Farley is offline
Reef Chemist
  
Join Date: Apr 2001
Location: Arlington, Massachusetts
Posts: 52,068
What is your roof and gutter made of? It may contaminate the water, even if it was pure when it hit your roof (which it may not have been, dust, nitrate, etc).
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Randy Holmes-Farley