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· Reference Team
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Both Prime and Amquel Plus use sodium thiosulfate to break chloramine into chlorine and ammonia. They both then eliminate the chlorine and bind the ammonia (using the same chemical, I think).

Prime claims slime-coat protection and heavy-metal chelating. Amquel does not, as I recall. (Sorry I'm too lazy to look it up right now.)

Prime is more concentrated, so it's cheaper per dose.
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