The Salifert Magnesium Test Kit gives reef keepers accurate magnesium readings in minutes using a precise titration method. Keeping magnesium in range is key to holding calcium and alkalinity stable.
Why test magnesium?
Magnesium keeps calcium and carbonate from precipitating out of the water. If magnesium runs low, calcium and KH become hard to hold steady no matter how much you dose. Most reef keepers aim for about 1250–1400 ppm.
Key features
- Approx. 50 tests per kit.
- Titration method for precise, repeatable readings.
- Easy-to-read colour change — results in minutes.
- Syringe, vial and reagents included with clear instructions.
Specifications
| Parameter | Magnesium (Mg) |
| Number of tests | Approx. 50 |
| Method | Titration (colour change) |
| Suitable for | Saltwater / reef aquariums |
Test the "big three" together
Pair with the Salifert Calcium and Salifert KH / Alkalinity test kits to keep your reef chemistry balanced.
Frequently asked questions
How often should I test magnesium?
Every 1–2 weeks is enough for most reef tanks, as magnesium changes slowly.
My calcium keeps dropping even though I dose — why?
Low magnesium is a common cause. Check it before increasing your calcium dose.
Genuine Salifert product, shipped from Astra Aquatics, Chennai.