Reef Chemistry Calculator
Precision dosing for calcium, alkalinity & magnesium
KH
Ideal: 7–12 dKH
Alkalinity
Carbonate Hardness
↓ raise to
dKH
Ca
Ideal: 380–450 ppm
Calcium
Elemental Calcium
ppm
↓ raise to
ppm
Mg
Ideal: 1250–1350 ppm
Magnesium
Elemental Magnesium
ppm
↓ raise to
ppm
Trace Element Dosing
16 elements • 60+ brand products • correctve dose to reach natural seawater levels
I
Iodine
Target: 60 ppb
Natural seawater: 50–100 ppb
ppb
ppb
Always test after dosing • Ca 380–450 ppm • Alk 7–12 dKH • Mg 1250–1350 ppm • Dose gradually — never spike parameters