I just got my refractometer and the calibration solution and set it to 35ppt. I then made a batch of brightwell aqutics saltwater per the instructions and tested it with my refractometer and it came out to a perfect 1.026. I then tested it with my instant ocean hydrometer (which is new also). It read 1.029+almost 1.030.
Now I tested my reef tank and now the water is super low (1.019) since I kept diluting my saltwater mixes to get it to read 1.025 with my instant hydrometer.
Can the hydrometer really be that far off from the refractometer?
Now I tested my reef tank and now the water is super low (1.019) since I kept diluting my saltwater mixes to get it to read 1.025 with my instant hydrometer.
Can the hydrometer really be that far off from the refractometer?
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