Pre-2k's test kit is accurate. She is using Edmonton tapwater which is treated with chloramine. Chloramine is a compound of chlorine and ammonia, and there is about 1 ppm ammonia in Edmonton's tapwater. When chloramine is neutralized with, say, Prime, non-toxic ammonium is formed. Many test kits will read the ammonium as ammonia.
However, ammonium will still be processed in the tank by bacteria into nitrite then into nitrate. Really, to solve this problem, RO or distilled water should be used instead of tapwater.
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