Thread: first reef tank - RO, DI & salt mix questions
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Old 08-18-2007, 11:30 PM
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I used one of those aquarium pharmacutical DI filters and it knocked my water down from 65ish to between 5 and 10 ppm, so it works fairly well, but RO/DI is defininitely better with between 0 and 1 ppm.
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