Magnesium sol'n; 75,000 mg/L. Increases magnesium in recirculating seawater systems.  Natural seawater ratio of chloride to sulfate mitigates ionic imbalance inherrent in approaches that are chloride-heavy with respect to Ca, Mg, K, and Sr supplementation in recirculating marine ecosystems (this is particularly the case with standard two- and three-part Ca/Alk/Mg approaches).
1 mL Isol8 Mg per 26.4 gallons (100 L) increases magnesium by 0.75 mg/L. 5 mL Isol8 Mg per 20.0 gallons (75.7 L) increases magnesium by 4.95 ppm. 100,000 mg/L magnesium, derived from magnesium chloride (anhydrous source, USP), and magnesium sulfate (hydrated, USP).