About: FreshWater pH/Alkalinity Down is a granular product that lowers pH and total alkalinity levels in hot water. When pH/Alk levels are in the proper range, your sanitizers will clean your hot tub more effectively. It’s also important to keep pH/Alk levels in range to keep you & your hot tub healthy.

Compatible With: Freshwater Ozone System, Freshwater Salt System, Frog @ease system, Bromine System, and more.

Instructions are on bottle.