Articles tagged: big three
- Basics
Calcium — the skeleton's building block
What corals are built from, why calcium depletes, magnesium's role in the calcium system and what happens when calcium drops too low.
- Basics
Magnesium — the invisible stability mechanism
Why seawater contains so much magnesium, its role in aragonite crystallisation and calcium solubility, and how its depletion shows up in the tank.
- Practice
The big three in practice — measurement, target values and balance
The interdependence of alkalinity, calcium and magnesium, target values by tank type, measurement methods and signs of imbalance.