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Unread 08/11/2018, 11:57 AM   #9
nycman
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Join Date: Mar 2017
Location: New York City
Posts: 199
I had it real bad earlier this year and eradicated it completely. In order of importance...

1) make sure you RO/DI water is exactly 0 ppm.
2) siphon it off the substrate and rocks.
3) lights above 14000K, >20,000K better for the short run.
4) water changes and GFO until P03 and N03 are exactly 0 ppm.


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