--- product_id: 453578456 title: "HTH Spa 86121 Clarifier, Concentrated Spa & Hot Tub Chemical for Crystal Clear Water, 16 oz" brand: "hth spa" price: "€ 29.60" currency: EUR in_stock: true category: "Hth Spa" url: https://www.desertcart.hr/products/453578456-hth-spa-86121-clarifier-concentrated-spa-and-hot-tub-chemical store_origin: HR region: Croatia --- # 16 oz concentrated power Compatible with all spa systems Boosts filter efficiency +30% HTH Spa 86121 Clarifier, Concentrated Spa & Hot Tub Chemical for Crystal Clear Water, 16 oz **Brand:** hth spa **Price:** € 29.60 **Availability:** ✅ In Stock ## Summary > 💦 Dive into clarity—because your spa deserves the best! ## Quick Answers - **What is this?** HTH Spa 86121 Clarifier, Concentrated Spa & Hot Tub Chemical for Crystal Clear Water, 16 oz by hth spa - **How much does it cost?** € 29.60 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/453578456-hth-spa-86121-clarifier-concentrated-spa-and-hot-tub-chemical) ## Best For - hth spa enthusiasts ## Why This Product - Trusted hth spa brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Crystal Clear Every Soak:** Transforms dull spa water into sparkling clarity for ultimate relaxation. - • **Filter Efficiency Booster:** Enhances your spa’s filtration system to maintain cleaner water longer. - • **Universal Spa Compatibility:** Works seamlessly with bromine, chlorine, and biguanide systems—no spa left behind. - • **Concentrated Formula, Maximum Impact:** Just a small dose delivers powerful cleansing to keep your spa pristine. - • **Part of the Ultimate Spa Care Routine:** Integrate with HTH products for consistently flawless water and worry-free soaking. ## Overview HTH Spa Clarifier is a 16 oz concentrated liquid formula designed to restore crystal-clear water in all types of spas and hot tubs. It improves filter efficiency, ensuring longer-lasting clean water, and is compatible with bromine, chlorine, and biguanide systems. Trusted by thousands with a 4.7-star rating, it’s an essential part of the HTH Spa care routine for a premium soaking experience. ## 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! ## 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 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09RG87Z2B | | Best Sellers Rank | #2,824 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #9 in Swimming Pool Clarifiers & Enzymes | | Brand Name | hth Spa | | Customer Reviews | 4.7 4.7 out of 5 stars (1,558) | | Global Trade Identification Number | 00073187861214 | | Included Components | HTH Spa 86121 Clarifier, Concentrated Spa & Hot Tub Chemical for Crystal Clear Water, 16 oz | | Item Form | Liquid | | Item Type Name | Concentrated Spa & Hot Tub Chemical for Crystal Clear Water | | Item Weight | 16 Ounces | | Manufacturer | Innovative Water Care | | Manufacturer Part Number | 86121 | | Manufacturer Warranty Description | Warranty | | Model Number | 86121 | | Number of Items | 1 | | Product Benefits | Restores crystal clarity to spa water, improves filter efficiency, compatible with all spas, part of regular HTH Spa care routine | | UPC | 073187861214 | | Unit Count | 16.0 Fluid Ounces | ## Product Details - **Brand:** hth Spa - **Item Form:** Liquid - **Item Weight:** 16 Ounces - **UPC:** 073187861214 ## Images ![HTH Spa 86121 Clarifier, Concentrated Spa & Hot Tub Chemical for Crystal Clear Water, 16 oz - Image 1](https://m.media-amazon.com/images/I/61lxdOVtgNL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: What are the ingredients ?** A: The HTH spa Clarifier contains cationic polymer, which clears dull, hazy water, improves filter efficiency. If you have additional questions, please feel free to reach out to our Consumer Engagement department at 866-484-7665. We're Here To Help, M-F, 9 AM - 7 PM, EST. **Q: What quantity to use for the small hot tub?** A: I have a 500 gallon hot tub and I use 2 oz a week **Q: Can you use this in a Inflatable hot tub?** A: Yes, you can use it in an inflatable hot tub, just be sure to use the correct dosage according to your volume of water. A clarifier basically chelates particles in your water so they can be filtered out through your pump. As long as your system is working properly, there should be not problem. **Q: This work good on inflatable hot tubs?** A: Yes. I use it in my inflatable and have for about 2 years. Works great. ## Frequently Bought Together - HTH Spa 86121 Clarifier, Concentrated Spa & Hot Tub Chemical for Crystal Clear Water, 16 oz - HTH Spa 86134 Clear Chlorinating Sanitizer, Spa & Hot Tub Chemical Controls Bacteria and Algae, 2.25 lbs - HTH Spa 86135 Non Chlorine Shock Oxidizer, Spa & Hot Tub Chemical Clears Cloudy Water, 2.25 lbs --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/453578456-hth-spa-86121-clarifier-concentrated-spa-and-hot-tub-chemical](https://www.desertcart.hr/products/453578456-hth-spa-86121-clarifier-concentrated-spa-and-hot-tub-chemical) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-06-25*