The Salifert Calcium Test Kit is a reef-keeper favourite for accurate, repeatable calcium readings. It uses a precise titration method with a clear pink-to-blue colour change, so there's no guessing between shades on a chart.
Why test calcium?
Corals, clams and coralline algae use calcium to build their skeletons. Most reef keepers aim for around 400–450 ppm. Testing regularly tells you how much your tank consumes and how much to dose — and stability matters more than chasing an exact number.
Key features
- 50–100 tests per kit, depending on your calcium level.
- Titration method — more precise than colour-chart tests.
- Clear pink-to-blue endpoint that's easy to see.
- Syringe, vial and reagents included with step-by-step instructions.
Specifications
| Parameter | Calcium (Ca) |
| Number of tests | 50 – 100 |
| Method | Titration (colour change pink → blue) |
| Suitable for | Saltwater / reef aquariums |
Test the "big three" together
Calcium, alkalinity and magnesium work as a team. Pair this kit with the Salifert KH / Alkalinity and Salifert Magnesium test kits for a complete picture of your reef chemistry.
Frequently asked questions
How often should I test calcium?
Weekly for most reef tanks; more often when you start or change dosing.
Tip for accurate results
Look at the vial from the side to make sure the whole sample has turned blue, not just the top.
Genuine Salifert product, shipped from Astra Aquatics, Chennai.