Spa Boss Prevent II (500mL) filter then they need to be

then they need to be replaced

Vacuum for hot tubs and small pools

** Does Not Come with Outer Filter**

•Soft blue LED lighting completes the look

It's unique design allows for installation on an array of spa shapes and sizes including round

Spa Boss Prevent II (500mL) filter then they need to beSPABOSS PREVENT II (500 mL) Prevent II by SpaBoss is a weekly stain and scale treatment that is multipurpose in helping to remove scale formation on hot tubs and spa equipment. Prevent II also acts as a clarifier if added weekly. Comparable to Arctic Pure Best Defense, Spa Guard Stain and Scale Control, Dazzle Stain and Scale , Beachcomber Care Free Eliminate, Rendezvous Protect Plus, Leisure Time Defender, and Essentials Stain & Scale Control.