Sera Magnesium-Test (Mg) Maintain a thriving underwater ecosystem with the Sera Magnesium-Test. Specifically designed for marine (saltwater) aquariums, this high-precision test kit allows you to monitor magnesium levels with ease and accuracy.
Magnesium is a critical mineral for reef tanks; it stabilizes calcium levels and is essential for the healthy growth of corals, calcifying algae, and other invertebrates. If magnesium levels are too low, calcium can precipitate, making it unavailable to your reef inhabitants.
Key Features High Precision: Provides clear, easy-to-read results to ensure your water chemistry remains within the ideal range (typically 1,200 – 1,400 mg/L).
Complete Kit: Includes three 15 ml (0.5 fl.oz.) reagent bottles, sufficient for approximately 60 tests.
Essential for Reefs: Prevents calcium depletion and supports the skeletal development of stony corals.
User-Friendly: Simple drop-count method that delivers professional-grade results without needing complex lab equipment.
Why Test for Magnesium?
In a closed aquarium system, magnesium is steadily consumed by biological processes. Regular monitoring with the Sera Mg-Test ensures you can intervene early with supplements, keeping your vibrant clownfish and delicate anemones in a stable, healthy environment.



