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Old 07-17-2019, 09:24 AM
Dave Bross Dave Bross is offline
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The basics for phosphates:

You don't use more than 3% calcium, 5% strontium, or 9.5% barium while using at least .4 - 1%, but not more than 2% zinc to help retard the formation of the dreaded surface crystals, and 2-5.5% phosphorus.
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