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Brightwell Magnesion-P 800G
High-purity powdered magnesium blend
Provides magnesium, which helps regulate the balance between calcium and carbonates in aquarium water, and is a component of aragonite, the mineral secreted by reef-building organisms to form skeletal material
Stronger and more economical than liquid magnesium solutions; created for hobbyists maintaining multiple reef aquaria
Formulated by a marine scientist
Basic Instructions: Dissolve 2.5 grams (approx. 1/2 teaspoon) of product per 20 US-gallons of aquarium water in 8-fl. oz. of fresh water; add every other day or as needed to maintain the magnesium concentration within a range of 1,290 – 1,320 ppm.