Aquaforest Magnesium Test Kit

The Aquaforest Magnesium Test Kit gives you a fast, accurate reading of magnesium levels in your reef or marine aquarium. Magnesium is one of the "big three" parameters alongside calcium and alkalinity, and keeping it in the natural seawater range of 1260 to 1500 ppm helps corals, clams, and coralline algae build healthy skeletons and stay vibrant. This professional-grade titration kit includes everything you need for roughly 40 tests. Explore the full Aquaforest lineup and more water testing kits at Squeaky's Aquatics.

Why This Test Kit

• Reef-accurate titration: Professional-grade reagents measure magnesium with the precision serious reef keepers rely on.
• About 40 tests per kit: Plenty of reagent for regular monitoring of a reef system.
• Batch certified: Every batch is verified against Aquaforest ICP-OES reference standards for consistent results.
• Part of a complete system: Works hand in hand with calcium and alkalinity testing to keep the big three in balance.

How to Use

Follow the included instructions to add the reagents to a measured water sample, then titrate until the color changes and read your magnesium value directly from the syringe. Test weekly, or more often if you dose heavily, and adjust with a magnesium supplement whenever your reading drifts below target.

Specifications

Recommended Pairings

• Aquaforest Magnesium 750g to raise low magnesium
• Aquaforest Calcium and KH Buffer to complete the big three
• More water testing kits and the full Aquaforest line

Frequently Asked Questions

What is the ideal magnesium level?
Natural seawater runs 1260 to 1500 ppm, and most reef keepers aim for the 1350 to 1450 ppm range to support coral and coralline growth.

How often should I test?
Weekly is a good baseline. Test more often if you dose heavily or are chasing a stubborn parameter.

Is this only for saltwater?
Yes. Magnesium testing at these levels is meant for reef and marine aquariums.

How do I raise low magnesium?
Dose a magnesium supplement such as Aquaforest Magnesium, retest, and adjust gradually until you reach your target.