it just never ends, now for what ever reason my refractometer is giving me false readings. i keep it in the box under my tank at room temp. i calibrated it with RO water and its telling me my reef is at 1020 and my new water is at the same i know this isn't true because i tested the water 2 days ago and it was at the proper level 1026. and their is no way that it dropped to 1020. what am i doing wrong, what can i do to fix it. its a RHS-10ATC refractometer