super high calcium or BS test kit

[mrhasan]

Originally Posted by jason604

Yup I too had the same problem with hydrometer. I just bought a refractometer this week and my salinity was at 1.030. I'm slowly bringing it down. At 1.028 right now. Even with high salt lvl wouldn't 600+ calcium reading massively high?

My reading at 1.030 (or something a bit above that) was around 550ppm with IO. With high ca concentrated salt (h2o ocean, salinity, etc.), I guess it can be well over that.