Description
Use this all-in-one powerhouse to quickly and easily increase chlorine levels, prevent bacteria, algae, stain and scale, reduce skin and eye irritation, improve filtration and soften your swimming pool water.
- All-in-1 weekly Cal Hypo pool shock
- Use weekly to solve 90% of pool water problems
- Restores crystal clarity in 24 hours
How to use
HTH Shock Advanced
1. Add Directly To Water Or Skimmer
Follow the on-pack instructions according to your swimming pool size.
2. Repeat Weekly
For best results, use HTH Shock Advanced as part of your weekly pool care routine to keep free available chlorine levels between 1 and 4 ppm.






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