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Aquarium Spare Parts
API Marine Magnesium 473ml
API MARINE MAGNESIUM raises and restores magnesium levels in your reef aquarium, and should be used whenever magnesium deficiency is present in your water. Use API MARINE MAGNESIUM when water tests show a magnesium level below 1,250 ppm mg/L in your reef aquarium.
Shake well. Add 5 ml. per 10 gallons of aquarium water.
