Clorox pool & spa extra blue 6 in 1 formulae

Clorox Pool&Spa XtraBlue Chlorinating Granules protect against algae and bacteria for water that stays clean, clear & free of visible algae. Protected against sunlight to last longer. - All purpose sanitizer, shock and algaecide - Kills green and black pool algae - Reduces chlorine odor and eye irritation - Kills bacteria, reduces eye irritation and chlorine odor - Removes organic contaminants for clear water - Protected against sunlight to last longer - Add through skimmer or directly to water - Protected against sunlight to last longer. Compatible with salt pools and compatible with chlorine pools - Add through skimmer or directly to water. Gallons of water treated per pound is 53000 - All purpose sanitizer, shock and Algaecide