On sale

One Shock Granular

EcoOne® One Shock Granular is a self-dissolving sanitizer and hot tub shock treatment in one. No complicated instructions, just drop these granules into the water and enjoy a healthy, clean spa all year round! EcoOne One Shock hot tub shock treatment is formulated to be better for skin, hair, and health, containing only the necessary key active components for effective spa water treatment.

Ingredients: Sodium dichloro-triazinetrione dihydrate (dichlor).

Disclaimer: All pictures shown are for illustration purposes only and the actual product may look different from what is pictured.

On sale
Sale price

Regular price $24.96
( / )
100% Human Safe
Totally Earth-Friendly
Never Animal Tested
Fully Biodegradable
Free of Harmful Preservatives
Free shipping on orders over $40
Fully recyclable packaging
Made in the USA
Click here to be notified by email when One Shock Granular becomes available.

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Daily sanitizer and shock treatment combo.

One Shock Granular FAQs

We recommend a more holistic approach to maintaining your spa that includes filling your spa with filtered water using our Hose Filter, sanitizing your spa after each use with One Shock, conditioning your water monthly with Spa Monthly, and regularly cleaning your spa’s pipes and filter with our Pipe Cleaner and Filter Cleaner. A great place to start is with our 3 or 6-month Maintenance Kit. And if your spa is particularly dirty give our Deep Clean Kit a try!
It might, but it depends on why your water is green. Green water can be a result of two things: First, a tint of green where the water is relatively clear is too much copper and can be treated with a "metal gone" product. We also recommend filling your spa with our Hose Filter. Second, green water with significant opacity is algae especially if there is a noticeable odor. You can kill the existing algae with One Shock Granular but you will still need to deal with the organic debris causing the algae. In this case it is best to drain your spa and use Pipe Cleaner and Filter Cleaner to remove all the algae and source contaminants. Refill your spa with our Hose Filter and One Shock Granular while the water comes up to temperature. Add One Shock Granular daily for a week to make sure the algae is completely eliminated.
EcoOne One Shock Granular is a self-dissolving dichlor disinfectant sanitizer and shock. The granular form allows you to precisely control chlorine levels in their hot tub, ensuring optimal sanitation. With the ability to measure exact dosages, customers can avoid overuse and reduce waste, making their purchase more economical.
A good starting point is treating your spa and hot tub one or two times per week. Remember always to sanitize the water after you get out and are done using the spa for the day. Sanitizing levels (free/available chlorine) should read between 1 to 2 ppm.

One Shock Granular Reviews