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Old 07-19-2014, 11:04 PM   #11
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Originally Posted by Flaxon-Waxon View Post
Lesson learned: don't use hydrometers. Use refractometers...

I will also add that I emailed IO regarding their hydrometer regarding compensating for a temp difference, and they replied that there is no compensating needed. Just my $0.02.

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In the bucket of IO salt mix you will find that they based their data on how much trace elements you would expect with different salinity at 77*F

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Old 07-20-2014, 09:39 AM   #12
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Originally Posted by jeffaquarius View Post
If you have mixed it at the same temp and salinity as with your tank before storing, it should maintain its salinity assuming there is no evaporation. According to this correction factor calculator if salinity is 1.023 with temp of 92 the correction factor is 0.005. So it becomes 1.028 at 70 deg F

Specific Gravity Temperature Correction

Thanks for the calculator. It explains ALOT!!!!! since my garage is super hot, I test my salinity @1.023, but whenever I checked the salinity in my tank, it was always @1.024, couldn't understand why... But now this makes sense. I will have to be very careful when mixing during the winter. The garage can probably get as low as 40-50F.

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