I too use Reef Crystals and recently noticed my ALK was low. My Red Sea test kit only gave a range, I was in the low range. I went out and bought a salfert kit, tested with it twice got a result of ...
DKH - 6.5
mg - 1300
calc - 400
PH 8.6
salinity 1.024
Bought bionic two part just added it...
