I’m having a problem with my magnesium. My tank reads 430 calcium 9.0 alkalinity but it reads 1600+ magnesium. So I mix up a fresh batch of water. I test the water before doing the water change. It tests at 430 calcium. 9.0 alkalinity. And 1600+ magnesium. Salinity 1.026. Temp 78. Has anyone had this same problem? Testing magnesium with redsea tester. Is it my salt or my tester? Or is there something else I’m missing. Please help thanks