Refractometer
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LAReefer4Life
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How much of a discrepancy between the 2? What brands do you own? Possibly faulty product.
SPR1968
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Well I have the Red Sea , the D D and Apex and they all read slightly different so I guess there must be a certain margin of error and they can be very sensitive especially the Red Sea one
I have always used the Red Sea as primarily so calibrate Apex to match this.
Consistency is the key, so pick one and stick with it.
I have always used the Red Sea as primarily so calibrate Apex to match this.
Consistency is the key, so pick one and stick with it.
LAReefer4Life
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I agree with margin of error comment. I have the apex and Red Sea refractometer and there is always a slight measurable difference.
bluprntguy
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Refractometers are finicky little pieces of equipment. I’ve had three of them and they would all give different readings immediately after calibration using the EXACT SAME calibration fluid. I found that they are all highly dependent on how hard you press the plate in place. This is the reason I switched to the Hanna salinity checker when I started up my latest tank.
