API Reef Magnesium Marine Aquarium Solution, 16-oz Bottle

• Helps raise the magnesium levels in your reef aquarium.
• The dual form of magnesium helps maintain the ratio of natural seawater.
• Promotes an environment for your finned friends to thrive and helps keep the aquarium ionically balanced.
• 100% free from ammonia, phosphate and nitrate.
• Use when testing shows a magnesium level below 1,250 ppm.

Shake well. Add 5 ml. per 10 gallons of aquarium water.