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#12
11-19-2005, 04:46 PM
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I have a reading of about 1.025 hydrometer with tank temp of 80.5 F with lights on and 79.1 lights out
so what does this work out to based on the calibration and a refract.
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only 25 gal & (6 bulb, t5's fixture & 30 gal sump with small fuge 
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#13
11-19-2005, 05:45 PM
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When we tested a friend's hydrometers, they were all off by quite a bit so it's hard to say without a straight comparison using both instruments how to calibrate your hydrometer. If you don't want to buy a refracto for now, best bet may be to borrow one from a friend & calibrate your hydrometer at home.
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