PolypLab One (500ml) PolypLab One (500ml) is a single-bottle reef supplement designed to maintain calcium, magnesium, and alkalinity without reactors, multi-part dosing, or added salinity. It combines calcium acetate, magnesium acetate, and hydroxide salts to support the major elements consumed by corals, clams, and other reef-building organisms. PolypLab One for Calcium Magnesium and Alkalinity One simplifies major element supplementation by combining balanced calcium, magnesium, and alkalinity support in one daily dosing system. Acetate ions are metabolized by bacteria into biologically available biocarbonate, while hydroxide salts provide additional buffering support for reef aquariums. PolypLab One Features 500 mL single-bottle reef supplement. Supplies calcium, magnesium, and alkalinity in one system. Does not elevate salinity. Does not contain calcium carbonate. Phosphate and silicate free. Designed for simple daily dosing in reef aquariums. Useful for maintaining major elements in coral and clam systems. Ingredients and Strength Ingredients: Calcium acetate, magnesium acetate, hydroxide salts Calcium: Approximately 70,000 mg/L Magnesium: Approximately 16,000 mg/L Alkalinity: Approximately 4,000 meq/L Product type: Major element reef supplement Size: 500 mL Compatibility Notes Use in reef aquariums that require calcium, alkalinity, and magnesium supplementation. Test water parameters regularly and adjust dosing based on aquarium consumption. Avoid direct contact with corals when dosing, and dose into an area with good water movement. Directions for Use Before first use, fill the bottle to the neck with reverse osmosis water and shake well. Dose 1 to 4 capfuls, or 5 to 20 mL, per 50 gallons of total aquarium volume daily in a high-flow area away from direct coral contact. Shake well before each use. Temporary clouding after dosing is normal, so nighttime dosing is recommended. What's Included 1 bottle of PolypLab One (500ml)