Search  for anything...
HTH

HTH Spa 86121 Clarifier, Concentrated Spa & Hot Tub Chemical for Crystal Clear Water, 16 oz

  • Based on 975 reviews
Condition: New
Checking for product changes
$9.64 Why this price?
Memorial Day Sale · 12% off was $11.00

Buy Now, Pay Later


As low as $2 / mo
  • – 4-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: In Stock.
Fulfilled by Amazon

Arrives Thursday, May 22
Order within 4 hours and 19 minutes
Available payment plans shown during checkout

Size: No Size


Features

  • BENEFIT: Use this concentrated formula to bring crystal clarity back to dull spa or hot tub water and enjoy a more relaxing experience
  • STRONG CLEANSER: Concentrated formula that will ensure your spa or hot tub is ideal for soaking for a long time
  • IMPROVES PERFORMANCE: Raises filter efficiency to keep your water staying clean
  • COMPATIBLE WITH ALL SPAS: HTH Spa Clarifier is great for all spas, including bromine, chlorine and biguanide
  • YOU'RE ALL CLEAR WITH HTH: For best results, use HTH Spa Clarifier as part of your regular HTH Spa care routine

Description

The HTH Spa Clarifier is a must-have for any spa or hot tub owner. This concentrated formula helps to bring crystal clarity back to dull water, ensuring a more relaxing soaking experience. The strong cleanser is formulated to improve performance and raise filter efficiency, keeping your water clean and clear. HTH Spa Clarifier is compatible with all spas, including those that use bromine, chlorine, and biguanide systems. For best results, use HTH Spa Clarifier as part of your regular HTH Spa care routine. With HTH, you're all clear and ready to relax in your spa or hot tub!

Brand: HTH Spa


Item Weight: 16 Ounces


Item Form: Liquid


Product Benefits: Restores crystal clarity to spa water, improves filter efficiency, compatible with all spas, part of regular HTH Spa care routine See more


UPC:


Brand: HTH Spa


Item Weight: 16 Ounces


Item Form: Liquid


Product Benefits: Restores crystal clarity to spa water, improves filter efficiency, compatible with all spas, part of regular HTH Spa care routine


UPC: 073187861214


Global Trade Identification Number: 14


Number of Items: 1


Unit Count: 16.0 Fl Oz


Product Dimensions: 2.46 x 2.46 x 7.85 inches


Item Weight: 1 pounds


Department: Unisex-Adult


Manufacturer: Innovative Water Care


Country of Origin: USA


Item model number: 86121


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, May 22

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.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Great product!
Size: No Size
Works great for our hot tub! I keep re-buying it. You won’t be disappointed!
Reviewed in the United States on April 27, 2025 by Elizabeth Burke Beaty

  • Works Amazing!
Size: No Size
Works amazing, I would highly recommend it. It cleared my water within 30 minutes.
Reviewed in the United States on April 24, 2025 by Amazon Customer

  • Works like it is supposed to.
Size: No Size
Very easy to use. Though sanitizer or chlorine in it. A couple squirts of this and enclosure water and minutes. Water stay clear for a long time. Works just as well as other expensive brands.
Reviewed in the United States on February 28, 2025 by Kmassage

  • Foam Down
Size: No Size
It does the job!
Reviewed in the United States on November 27, 2024 by Lindsey Lewis

  • From cloudy to clear in a few hours
Size: No Size
New to hob tub ownership and couldn’t get the water clear. It had a foggy hazy look to it. All levels were correct and it’s sanitized but just didn’t look great. Did some research and saw this product being recommended so thought I’d give it a try, especially for the price. Put 2 tablespoons in my 400 gallon spa and ran the jets on the cleaning cycle. Went to the gym and came back to a crystal clear spa. I was in shock at how quickly it worked. Presents the spa so much better. Highly recommend! ... show more
Reviewed in the United States on March 25, 2025 by Zachary Zachary

  • A dependable brand.
Size: No Size
I have tried multiple spa products from HTH and they all work as expected. I continue to buy them for their price and quality. The clarifier cleared up my cloudy hot tub in about 24 hours. It helped to skim off the dirty foam that built up after application and do a filter swap after the first 12-24 hours. ... show more
Reviewed in the United States on December 29, 2024 by SeeJ333

  • Works great
Size: No Size
The is a great clarifier. I use it in my airbnb hot tub. It works great and it is cheaper than others.
Reviewed in the United States on April 12, 2025 by Michelle Graham

  • Great clarifier
Size: No Size
Lasts a long time and keeps my hot tub clean
Reviewed in the United States on December 29, 2024 by Annie P

Can't find a product?

Find it on Amazon first, then paste the link below.