shock

• Tests for total and free chlorine
• Results in seconds

• Fast Acting
• Powerful shock treatment for crystal clear water
• Ideal for all pool surfaces
• Available in 6 x 454g and 8kg sizes

• Fast-acting
• Powerful shock treatment for crystal clear water
• Controls bacteria and algae in swimming pool waters
• Chlorinating granules 
• Available only at Costco

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

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

• Removes organic contaminants from water
• Does not contain chlorine
• Perfect for salt water pools

• Controls bacteria and algae in swimming pool waters