> Then why am I (and many others) adding KNO3 to my planted > tank 3x a week? Or have I misunderstood your post? > > If I don't add KNO3, I quickly reach 0 Nitrates. You just answered your own question. -Nick _______________________________________________ Aquatic-Plants mailing list Aquatic-Plants at actwin_com http://www.actwin.com/mailman/listinfo/aquatic-plants