Steve, check out this reference:
I also found this quote: "Specific gravity is measured with a hydrometer, and is directly affected by water temperature. Most aquarium hydrometers are calibrated for 60o F. Normal salt water has a specific gravity of 1.025 at 60o. When the water temperature rises, the specific gravity will fall roughly by .001 for every 10o. Therefore, at a temperature of 70o, the specific gravity will rise at the same rate. "
If this is true then a hydometer, that does not compensate for temperature, would state that the same water was 1.025 at 60 degrees and 1.023 at 80 degrees.
Mike
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bbeck4x4 wrote:
