So I did a water change (25gal) and I decided to test the Calcium and Magnesium. They both tested low. 350 cal 950 Mag.
I also tested the salinity to make sure it was a correct mix and it tested at 1.025. I used both a refractometer and a digital Hanna tester. Both tested the same. WTF?
I also tested the salinity to make sure it was a correct mix and it tested at 1.025. I used both a refractometer and a digital Hanna tester. Both tested the same. WTF?