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Old 08-06-2008, 05:01 AM
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marie marie is offline
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Location: powell river
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I use both, I use the hydrometer because its quick and easy to use and i periodically use the refractometer to check on the accuracy of the hydrometer
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300g tank
http://www.canreef.com/vbulletin/showthread.php?t=86252
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