12/14/2018, 09:49 PM
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#6
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RC Mod
Join Date: Mar 2002
Location: Mountain View, CA, USA
Posts: 88,616
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Here's my rule of thumb:
Quote:
Add about 0.52 grams of sodium nitrate per 100 gallons of water to raise the nitrate level by 1.0 ppm. That's about 1 tsp per 500-1000 gallons, very roughly. For potassium nitrate, use about .62 gram per 100 g.
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Jonathan Bertoni
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