Products in the kit are; 1) Dazzle Stain & Scale Cleanse (1L) for controlling metals and preventing scale formation, 2) Dazzle Algae Clear 60 (500 ml) for algae clean-up and control and 3) Dazzle Ultra Shock (950g) for spring shock/oxidation. This kit will treat up to 80,000 litres. Instructions included.