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Old 01-08-2007, 11:40 PM   #2
Deanos
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Location: Bronx, NY 10475
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Marine reefers use a TDS meter to measure pure water...usually before and after their RO/DI unit. Measuring the TDS of water from either a FW planted tank or a saltwater aquarium is just short of a waste of time. Both usually contain livestock releasing "impurities" into the water raising TDS levels. Comparing parameters of a FW tank and a reef tank rarely makes sense either.
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