Magnesium Prills treat water by decreasing surface tension, and creating smaller water clusters. Smaller water clusters allow for better penetration in and around everything they touch. Features : Create hexagonal, structured, "thin" water at home for pennies! Prill water works better!Kiln dried for extra hardness.Virtually a one-time purchase!Nemenhah Certified Provider of sacraments suitable for use in Ceremony of the Native American Church. Statements made on this website are directed to ministers of the Native American Church of Nemenhah.