Overview Concentrated supplement offsets the rapid constant magnesium depletion by coral absorption. Superior quality formula elevates magnesium without interrupting delicate ionic balance of marine water. Fluval Sea Magnesium supports optimal pH and coral growth, raises and maintains magnesium, and helps prevent calcium precipitation.
5 mL (.17 oz.) treats 75L (20 US gallons). Contains no gluconates, nitrates, or phosphates.