- Joined
- Oct 19, 2018
- Messages
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Hello all, i’m testing the salinity of my tank water using a refractometer, hydrometer and Hannah checker the Hanna checker and hydrometer both read the same. The refractometer on the other hand Reads high. I calibrated the refractometer and Hanna checker is calibration solution before testing. Looking for others opinions on why the refractometer would be reading this way. Thanks in advance. Steve.