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#2
03-12-2008, 10:55 PM
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There are quite a few on ebay, look for a seawater or a salt (brine) refractometer.
A narrow range like 1.020 - 1.030 and ATC (automatic temperature compensation). Here's a good article by Homles Farley on selection and calibration. http://reefkeeping.com/issues/2006-12/rhf/index.php#19
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Brian ____________________________________________ 220g inwall 48"x36"x30" 110g mangrove refug/sump Poison Dart Frog Vivarium 
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