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BryceM · 04-07-2006, 06:03 PM

I would agree 100% with Trena on this. I added NO3 to 20ppm (by a cheap test kit) and had a horrible bout of green dust. I finally checked with Lamotte and actually had NO3 >80 ppm. Two or three WC's later NO3 was ~20 ppm and the green dust went away almost overnight.

04-07-2006, 06:03 PM	#3 (permalink)
BryceM Administrator Join Date: Nov 2005 Location: South Central Idaho, USA Posts: 4,262 iTrader Ratings: 42 iTrader Positive Rating: 100% Plant Points: 178534	I would agree 100% with Trena on this. I added NO3 to 20ppm (by a cheap test kit) and had a horrible bout of green dust. I finally checked with Lamotte and actually had NO3 >80 ppm. Two or three WC's later NO3 was ~20 ppm and the green dust went away almost overnight.