Thread: hair algae HELP!!
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  #16  
Old 01/10/2008, 10:18 AM
Avi Avi is offline
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Join Date: Feb 2001
Location: Westchester County, NY
Posts: 6,754
I hit that (approx. 20 ppm) wall, too. The only thing that solved that was a sulfur denitrifier. Now, always zero, so I'd suggest that.
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