Eclipse3 is an all-natural mineral treatment for pools, spas and hot tubs. Eclipse3 has been proven to perform extremely well in three main areas; it eliminates algae growth and reduces your use of chlorine, clarifies the water while maintaining a proper pH level, and can reduce your electrical operating costs by as much as 66%. Eclipse3 helps pool and spa owners maintain a healthier, cleaner and more natural way of enjoying their investment and leisure time. (Used by Six Flags Great Adventure)