DEL Ozone Hot Tub and Spa Eclipse CD Ozone Generator - ECS-1RPAM2-U Designed for spas and hot tubs up to 750 Gallons Saves you money on chemicals and eliminate odors Ozone kills up to 99.99% of microorganisms found in spas and hot tubs Eliminates unpleasant by-products from bromine and chlorine chemicals Includes: Eclipse CD Ozone Generator, Ozone Supply Tubing, Check Valve, Mounting Hardware, Installation Guide, and Water Chemistry Guide