ADVANTIS TECH Rendezvous Spa Specialties Protect Plus 32oz Rendezvous Spa Specialties Protect Plus 32oz Protects against stains, scale & rust Brightens spa water while protecting equipment Suspends stain-causing minerals and clarifies spa water with a flocculant agent to keep water sparkling clear 2 ounces for ever 250 gallons of spa or hot tub water