So I have a new refractometer (the one on BRS) also purchased their calibration fluid so my problem is when I calibrate to distilled water then check up against the solution it says that the solution is high by .002 so which calibration should I trust the fluid or distilled water.
In a pinch you can calibrate using ro/di water but it may end up a tiny bit off like you are getting with the distilled water.
__________________ 180g- Mostly BIG fish and some coral. ~80g Nuvo- My coral tank with "happy fish"~ 90g- FOWLR Not the not happy type of fish~ 125g- Freshwater Malawi Cichlids ~10g- Nuvo- The refugees from the Ich of '18