500gms 5 in 1 Shock Treatment

***This product cannot be posted in the mail due to its chemical contents but is available for sale in store***

• Convenient 500g single shock dose of 5in1 granular
• Powerful, slow dissolving granular Trichlor with copper
• Not recommended for use in vinyl lined pools
• Controls bacteria
• Kills algae
• Clarifies water
• Reduces loss of chlorine to sunlight
• Lowers pH