One Shock Granular
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Daily sanitizer and shock treatment combo.
Fast Dissolving Granules
Effective Sanitizer Treatment
Easy & Effective
How to use One Shock.
To sanitize:
With jets running, add EcoOne One Shock Granular daily or as needed at the rate of ¼ to ⅛ oz per 500 gallons of water directly into spa water or filter compartment. Wait 5 minutes and check chlorine/sanitizer levels. It should read between 1 to 2 ppm available chlorine.
To shock:
Shock your hot tub or spa each week by adding 1 oz of shock chlorine granules for every 500 gallons of water to achieve 1-2 ppm available chlorine concentration.
Please refer to the Directions For Use instructions listed on the back of the bottle.
Is One Shock Granular the only product I need to keep my spa or hot tub clean?
Will One Shock Granular help if my spa or hot tub water is green?
Why use a granular version?
When should I add One Shock Granular?
Think beyond the backyard.
Our skin- and planet-friendly products were made for our world and your family.
One Shock Granular Reviews
No-sweat spa care.
Check out our Spa Care Guide to learn how you can care for your spa, your skin, and the planet all at once with EcoOne.
EcoOne Spa Care Products