Sodium nitrate or potassium nitrate

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Only if the ammonia is not absorbed first. It may take substantial amounts to overcome organisms using it.

Sorry late to the thread… if I make 1L of Ammonium bicarbonate solution, does it loose its effectiveness over time. For example if I am dosing 30mls a day, it would take about 30 days to use the solutions, I have it in a dosing container on a dosing pump to does the 30 MLS through out the day. In time will the solution be come less effective or any thing else?