AquaFinesse® Refill Bottle *BONUS* INCLUDES ONE FREE SPA CLEAN TABWhat is Aquafinesse? Aquafinesse is a revolutionary way to keep your spa clean, smelling great and ready for relaxation. It's not just a sanitation plan, it's an experience. With only one dose per week Aquafinesse uses natural minerals to address the organic debris that tends to form on all surfaces of your hot tub, from the plumbing , to the filters, to the surface of your spa itself. We've all felt the slime walls that tend to develop in hot tubs.