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shock
hth Test to Swim Strips
HTH® Time to Shock Test Strips
  • Tests for total and free chlorine
  • Results in seconds
Don't know which products you need? Visit our water testing section.

hth super sock it shock treatment 454kg
HTH® Super Sock It Shock Treatment
  • Fast Acting
  • Powerful shock treatment for crystal clear water
  • Ideal for all pool surfaces
  • Available in 6 x 454g and 8kg sizes
Don't know which products you need? Visit our water testing section.

hth MAX 70 sock it shock treatment pouch
HTH® Max 70 Sock It Shock Treatment
  • Fast-acting
  • Powerful shock treatment for crystal clear water
  • Controls bacteria and algae in swimming pool waters
  • Chlorinating granules 
  • Available only at Costco
Don't know which products you need? Visit our water testing section.

hth green to blue
HTH® Green to Blue Shock System

At the start of the season, or if a severe algae bloom occurs during the season, the pool can be treated and returned to its clear blue appearance within 24 hours by using the hth® super green to blue shock system. hth® super green to blue II is a flocculant that will help clear your pool by dropping particles to the bottom of your pool.

  • One pouch per 10,000 gallons
  • Compatible with Salt Systems

 

 hth green to blue shock I pouch  hth green to blue shock II pouch
  • Kills bacteria & algae
  • Won't fade liner when used as directed
  • Crystal clear results in 24 hours
  • Reduces eye irritation caused by swimming pool water
  • Transforms water from green to blue in 24 hours
  • Drops particles to bottom of pool
  • Makes particles easy to vacuum to waste

Don't know which products you need? Visit our water testing section.

hth Non-chlorine shock oxidizer
HTH® Non-Chlorine Shock Oxidizer
  • Removes organic contaminants from water
  • Does not contain chlorine
  • Perfect for salt water pools
Don't know which products you need? Visit our water testing section.

hth liquid shock treatment 5L
HTH® Liquid Shock Treatment
  • Controls bacteria and algae in swimming pool waters
Don't know which products you need? Visit our water testing section.