Contain all major, minor and trace elements of tropical seawater in natural proportions. Optimal calcium and magnesium concentrations for reef aquariums + prebiotic bacterial food. Is the ideal basis for the care of even the most sensitive fish, corals, invertebrates and marine algae in modern reef aquariums.
55lbs for 165-200 US-gal
Alkalinity: 8-9dH
Calcium: 420-460
Mag: 1300-1400