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Old 01/03/2018, 01:20 PM   #2
bertoni
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Join Date: Mar 2002
Location: Mountain View, CA, USA
Posts: 86,731
The magnesium will precipitate if it's ionic. I wouldn't add magnesium stearate to a tank, in any case. I don't know what it'd do, but it's basically a soap-like sort of compound, which could be quite toxic. The Brightwell supplement doesn't work to add magnesium unless you dose the precipitates, and it's not clear that they add any magnesium to the product. It's probably present as an impurity.


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Jonathan Bertoni
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