Fritz Elements Magnesium

Fritz RPM Liquid Magnesium is a concentrated aquarium supplement designed to maintain optimal magnesium levels essential for reef health. Formulated with pharmaceutical-grade magnesium chloride and magnesium sulfate in a balanced ratio, it supports coral growth, invertebrate development, and coralline algae vitality while preserving natural seawater ion balance. At 70,000 ppm concentration, each millilitre raises magnesium by 18 ppm per gallon, allowing precise dosing to reach the ideal 1280–1400 ppm range. Free from toxic metals and easy to apply, this liquid formula helps prevent calcium precipitation issues when used before adjusting alkalinity and calcium supplements. Ideal for serious reef keepers seeking reliable magnesium supplementation.