Not sure where I learned it, but someone mentioned once to use your palm to heat up the Milwaukee checker to temperature of your display so that the correct temperature correction is done.
If you want a very accurate, automatically temperature corrected, way to calibrate;
Ensure that your equipment is reading correctly and your aquarium is at the right salinity with Tropic Marin's High Precision Hydrometer. Many tank inhabitants are sensitive even to minor changes of the water conditions. Unfortunately as we've all experienced, salinity reading equipment as...
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