Apex is a real pain! my refractometers when calibrated with 35/1.026 solution says I'm spot on or a touch low at 34.5-35 but, Apex calibrates to 34.6 or so and says my salt is 36.7 THEN!
Hanna checker says near 535 twice but Apex regularly tests at 715. I'm most confused about the Calcium variance near 200 points.
Hanna checker says near 535 twice but Apex regularly tests at 715. I'm most confused about the Calcium variance near 200 points.