Ultra Spa Clarifier is a fast acting hot tub water clarifier based on a natural polymer called CHITOSAN. Advantages against other clarifiers:Fast acting non-toxic and readily biodegradable natural clarifier. Removes body fats, cosmetic oils & suntan lotions. Removes dissolved metals. Removes dead algae spores. Improves filtration due to its “enzymatic effect” on unwanted pollution. Economical to use. Compatible with all recognised sanitisers.