This API MARINE Reef Aquarium Magnesium Solution in a16-Ounce Bottle raises magnesium levels to maintain a thriving reef aquarium. Use whenever testing shows a magnesium level below 1,250 ppm.
Features:
Includes:  Contains one (1) API MARINE MAGNESIUM Reef Aquarium Magnesium Solution 16-Ounce Bottle
Intended Pet(s):  Fish
Product Dimensions:  2.375 x 2.375 x 8.5
Capacity:  16 fl oz