FreshWater Ag+ Silver Ion Sanitizer | Hot Tub Type_Pizza Oven The standard size is the

The standard size is the right choice for moderate hardness and for top-off maintenance throughout the year

and veggies

Regular use keeps water consistently clear and comfortable

Each cartridge provides 50 square feet

FreshWater Ag+ Silver Ion Sanitizer | Hot Tub Type_Pizza Oven The standard size is theThe FreshWater Ag+ Silver Ion Sanitizer is a supplemental sanitizing cartridge that slots into your spa's filter standpipe and releases a steady stream of positively charged silver ions into the water for approximately four months. Those silver ions inhibit bacterial growth continuously, meaning you can run your spa on a much lower chlorine residual than a chlorine only spa would require. This is one of the most popular FreshWater products because it