Brightwell Aquatics Magnesion-P High-Purity Powdered Magnesium Supplement for Reef Aquariums Supports Coral Growth Enhances Calcium & Alkalinity Balance, 400g

Brightwell Aquatics Magnesion-P is a professional-grade anhydrous powdered magnesium supplement formulated to support the ionic balance of marine aquariums. Magnesium is critical for maintaining proper calcium and alkalinity levels, preventing unbalanced precipitation that can cause unstable water parameters. Magnesion-P contains no water, making it over 300% more concentrated than standard magnesium products. It's ideal for reef systems with high magnesium demand due to dense coral populations or aggressive growth rates. Magnesium is also a key element in the skeletal structure of corals, clams, and other reef invertebrates that form aragonite. Maintaining levels between 1,290 and 1,320 ppm ensures your reef system is optimized for growth and long-term health. Because Magnesion-P is free from phosphate, silicate, and organic fillers, it dissolves quickly and cleanly. Backed by scientific research and formulated with ultra-pure ingredients, this supplement is ideal for advanced hobbyists and reef keepers seeking professional-level precision.

• HIGHLY-CONCENTRATED MAGNESIUM SUPPORT Pure anhydrous powdered blend delivers 300% more magnesium than most competing reef aquarium supplements.
• ENCOURAGES BALANCED REEF GROWTH Helps regulate calcium and carbonate levels while supporting coral and invertebrate skeletal development.
• FAST-DISSOLVING, NO ORGANIC FILLERS Dissolves easily in freshwater with no additives like EDTA, gluconate, or polygluconate that impact water chemistry.
• FORMULATED FOR MAXIMUM EFFECTIVENESS Crafted by marine scientists to maintain stable magnesium in SPS, LPS, and mixed reef aquariums.
• AMERICAN-MADE EXCELLENCE – Brightwell Aquatics is an industry-leading brand committed to providing innovative and scientifically backed aquatic care products. Made in the USA, we consistently deliver advanced superior quality solutions to elevate the vibrancy and health of your aquarium.