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Something interesting about Reef Crystals
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12/05/2018, 08:49 PM
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bertoni
RC Mod
Join Date: Mar 2002
Location: Mountain View, CA, USA
Posts: 88,616
The RO/DI might read 6 ppm TDS after some aeration, but if that's phosphate, either the kit or the RO/DI unit is failing.
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Jonathan Bertoni
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