Randy Holmes-Farley
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My Tank Thread
Some of those ingredients in flourish do not seem like I would want them in my aquarium. Copper, chlorine, phosphate etc.
Those are not in Flourish nitrogen. It has nitrate and another material lacking a clear explanation which might just be urea.
http://www.seachem.com/flourish-nitrogen.php
Derived from: potassium nitrate, urea (iminium salt)