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Old 05-25-2013, 01:51 PM   #1
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Spectrometer

Some reefers use spectrometer to measure their salinity. My question is, how critical is it in having a very accurate salinity when changing water?
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Old 05-25-2013, 01:59 PM   #2
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Very important. It can stress out fish, cause enough to kill inverts and stress/harm coral.
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Old 05-25-2013, 02:27 PM   #3
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When you are using other hydrometer even they are off, you are measuring both the tank and the new salt water mix with the same readings. Would that make any difference? Also, the spectrometer needs calibration and it can also be off.
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Old 05-25-2013, 09:02 PM   #4
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I thought a spectrometer measures light? A refractometer for salinity?
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Old 05-25-2013, 09:32 PM   #5
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Yeah, we use refractometers. They need calibrated with the fluid they come with. I picked up a digital refractometer that needs less calibration and love it. I use it weekly and it keeps my salinity perfect. The salinity sometimes goes up, but never more then .01 and never above 27 or below 25.
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Old 05-25-2013, 11:22 PM   #6
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Quote:
Originally Posted by Bectan01 View Post
I thought a spectrometer measures light? A refractometer for salinity?
Yes I mean refractometer. Sorry for the confusion.
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