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Bio Ouster

Ouster 3in1 Cold Plunge Water Treatment, Weekly Cleaner, 32oz

Based on 553 reviews
Condition: New
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$29.97

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Availability: In Stock.
Fulfilled by Amazon
Arrives Monday, Nov 2
Order within 10 hours and 35 minutes

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At a glance

Condition
New
Model
OS-PCL-32
Weight
2 lb
Item Form
Liquid

Features 5

  • EFFORTLESS WEEKLY ROUTINE - Pour 1 oz per 100 gallons, turn the pump on high or lightly stir to mix, and plunge again in 15 minutes. No draining, no test strips, no juggling chemicals - one dose keeps your routine on schedule.
  • TRIPLE ACTION FORMULA - The cleaner lifts body oils, lotion and sunscreen, the clarifier binds fine particles for easy removal with or without a pump, and the softener conditions water for a smoother, fresher feel every plunge.
  • WORKS WITH EVERY SETUP - Made for acrylic, portable and inflatable plunges, ice barrels, pods and cold tubs, filtered or unfiltered, with or without a chiller - fits alongside chlorine, bromine or peroxide sanitizer routines.
  • DOSE RIGHT, STAY CLEAR - On a fresh fill start with 2 oz per 100 gallons, then 1 oz weekly. Proper dosing is the key to consistently clear water. Made in the USA, lab tested, septic safe, with SDS documentation available.

Description

How often should I use the Ouster 3in1 Weekly Cold Plunge Water Treatment? For best results, use the Ouster Cold Plunge Weekly Treatment every 7 days. Start with an initial dose of 2 oz per 250 gallons of water, and then maintain with a weekly dose of 1 oz per 250 gallons. Is this treatment safe for all types of cold plunges? Yes, the Ouster Cold Plunge Weekly Treatment is safe and effective for all types of cold plunges, including acrylic, portable, and inflatable models. It’s designed to maintain optimal water clarity and quality across all plunge types. Do I need to drain my cold plunge after using this product? No, you do not need to drain your cold plunge after using this treatment. The formula is designed to work without draining, making it easy and convenient to maintain your cold plunge water quality. Can I use this product alongside other ice bath accessories? Absolutely! The Ouster Cold Plunge Weekly Treatment complements other ice bath accessories and is safe to use with sanitizers and other water treatment products, ensuring a clean and refreshing plunge. What should I do if the water in my cold plunge becomes cloudy? If your cold plunge water becomes cloudy, simply add an additional 1 oz of the Ouster Cold Plunge Weekly Treatment per 250 gallons of water. Repeat as needed until the water clears up, ensuring your ice bath remains clean and clear. Cold Plunge Weekly Care CP Water Stabilizer Water Balancing Kit Spa Surface Cleaner Hot Tub Power Purge Hot Tub 3in1 Weekly Care Hot Tub Watercare Kit

Specs 13

Brand Bio Ouster
Item Weight 2 pounds
Item Form Liquid
Product Benefits Prevents Stains, Cleansing, Prevents Corrosion
Brand Name Bio Ouster
UPC 860011456421
Number of Packs 1
Number of Items 1

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Nov 2

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

Great for our cold plunge
This product works great! I’ve been using it in my cold plunge and it really helps keep the water fresh, clean, clear, with no odor. Super easy to use just add it in weekly and it does the job. I love that it’s a 3-in-1 treatment, which saves time and makes maintenance simple. Definitely recommend if you want to keep your plunge water looking and feeling great! Came wrapped up securely no leaks. Good price. Size last us all month in our cold plunge. ... show more
Reviewed in the United States on September 11, 2025 by Whit
Works well, titan cold plunge with chiller
I use this in my Titan Wellness 1/4 hp chiller and cold plunge. Works fine!!
Reviewed in the United States on August 22, 2026 by Christina Hagestad
It works
Good price and easy to use. It definitely made the water clearer in about 20-24 hours.
Reviewed in the United States on May 21, 2026 by Amazon Customer
Mystery Ingredients - Trust us, we are a chemical company.
What are the mystery ingredients? Tears from cage free chickens and tortured turkeys? Reclaimed Data Center waste water? Toilet bowl cleaner? Who knows, but it does seem to kill anything in my cold plunge water and keep it clear and tinted toilet bowl blue for much longer than filter and ozone alone. Been using for a year and on my second bottle. Seems safe-ish: skin hasn’t blistered off and my hair hasn’t fallen out or turned blue. Still I wonder what’s in the mix with every plunge. Probably nothing, but wish they would be as transparent on the chemical mix as they claim your water will become. Trust us, we are a chemical company. ... show more
Reviewed in the United States on August 4, 2026 by BErickson
Clean
By far the best for my cold plunge. I have tried them all and this one lasts and just a little bit goes a long way.
Reviewed in the United States on July 9, 2026 by DANIEL B.
it’s easy
good product
Reviewed in the United States on August 20, 2026 by eric howland
Works well for me
I think the key is if you have a pump to run it from time to time. I've gone as long as a month before changing the water. Not that it ever go cloudy, but thinking - okay, it is time for fresh water. I get some crunch like stuff on the bottom, but I think that is just due to the hard water in my city. With this chemical there's no more cloudiness. Water is always clear. Will continue to use it. ... show more
Reviewed in the United States on March 2, 2026 by R. Haun
Unknown Chemical Soup
It works. But they are hiding the formula under the guise of "proprietary blend" on the SDS which is fine but if I'm bathing in this chemical blend every day I'd atleast like to be informed about what's in the product so I'm not poisoning myself every day.
Reviewed in the United States on May 13, 2026 by Anna
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