Best Hot Tub Serum in 2026

Your Hot Tub is part of your family. It deserves to be chemically pampered. The serum is the only weekly maintenance product you will see in this category that has the highly regarded EPA Registration that is NOT designated as a sanitizer/oxidizer.

Compare Serum to many other brands that you see as a maintenance product. Hot Tub Serum performs a Powerful Clean Performance. It polishes water to super brilliance reduces sanitizer decay rates for extra sanitizer mileage softens water for the ultimate soaking escape and mitigates organic plumbing & jet bio-contamination.

Serum maintenance is added at a weekly rate of one ounce per 100 gallons. The serum will work with chlorine, bromine, ozone, mineral sticks, enzymes, or any other chemical protocols you now use

Your Hot Tub is part of your family. It deserves to be chemically pampered. The serum is the only weekly maintenance product you will see in this category that has the highly regarded EPA Registration that is NOT designated as a sanitizer/oxidizer.

Compare Serum to many other brands that you see as a maintenance product. Hot Tub Serum performs a Powerful Clean Performance. It polishes water to super brilliance reduces sanitizer decay rates for extra sanitizer mileage softens water for the ultimate soaking escape and mitigates organic plumbing & jet bio-contamination.

Serum maintenance is added at a weekly rate of one ounce per 100 gallons. The serum will work with chlorine, bromine, ozone, mineral sticks, enzymes, or any other chemical protocols you now use.

Fast acting

Add as needed to maintain 3-5ppm

Acts as a sanitizer and an oxidizer; no need for two products

Helps chlorine last longer

Reduces sun's impact on chlorine

Perfect for salt pools, new pools and pools that use liquid chlorine

Salt for hot tub spas by Freshwater. Ace System uses salt and electricity to create chlorine for your spa.

Fast-acting Calcium Hypochlorite chlorine granules provide 65% minimum available chlorine for hard-hitting immediate results!

NOTE: This item cannot be shipped to Alaska or Hawaii (item will be removed from your order).

Fast-acting Calcium Hypochlorite Cal-Chlor chlorine granules provide 68% available chlorine for hard-hitting immediate results!

BioGuard Algae All 60 - 1 Quart

Works in chlorinated or brominated swimming pools to inhibit stubborn algae growth

Excellent for use with swimming pools with attached spas or fountains

Quickly oxidizes contaminants in your spa or hot tub

Enhances the sanitizing effectiveness of chlorine and bromine

Removes chloramines and bromamines that cause chlorine odor

The Hayward TurboCell Replacement Salt Cell for in-ground pools up to 25,000 gallons delivers silky smooth, naturally sanitized water that won’t irritate eyes, dry out skin or cause fabrics to fade

Cuts chlorine costs by up to 50% for major savings season after season

Independently certified by the National Sanitation Foundation (NSF) for reliable performance

New 2021 Model PPC1 Salt Cell

For use only in certain hot tub models: Artesian Elite, Artesian Island (optional on Artesian Island Elite and South Seas); Marquis Crown (optional on Marquis Elite, Vector and Celebrity); Caldera Vacanza; and Hot Spring Hot Spot.

The system includes one Mineral Cartridge that lasts 4 months, one SmartChlor Cartridge, FROG @ease Test Strips, and one package FROG Jump Start startup shock.

Kills bacteria 2 ways with FROG Sanitizing Minerals and SmartChlor – a unique, patented chlorine that self-regulates and maintains a consistent low Free Chlorine level

Product Does Not Cloud Pool

Ready To Use, No Mixing Required - Great Choice for Pool Closings

Perfect For Pressure Washing, Sanitation & Other Related Uses

The Hayward TurboCell Replacement Salt Cell for in-ground pools up to 40,000 gallons delivers silky smooth, naturally sanitized water that won’t irritate eyes, dry out skin or cause fabrics to fade

Cuts chlorine costs by up to 50% for major savings season after season

Independently certified by the National Sanitation Foundation (NSF) for reliable performance

BENEFIT: Protect your swimming pool and enjoy clean, clear water with these easy-to-use chlorine-based tabs; Kills algae and bacteria

CLEAN, CLEAR WATER: HTH Chlorine Tabs keep water clear while protecting against bacteria, algae and other organisms

SLOW DISSOLVING, LONG LASTING: Sun protected for longer chlorine life, HTH Chlorine Tabs dissolve slowly and last up to one week

Your Hot Tub is part of your family. It deserves to be chemically pampered. The serum is the only weekly maintenance product you will see in this category that has the highly regarded EPA Registration that is NOT designated as a sanitizer/oxidizer.

Compare Serum to many other brands that you see as a maintenance product. Hot Tub Serum performs a Powerful Clean Performance. It polishes water to super brilliance reduces sanitizer decay rates for extra sanitizer mileage softens water for the ultimate soaking escape and mitigates organic plumbing & jet bio-contamination.

Serum maintenance is added at a weekly rate of one ounce per 100 gallons. The serum will work with chlorine, bromine, ozone, mineral sticks, enzymes, or any other chemical protocols you now use

Stabilized to protect against harmful UV rays

Improves the chlorine residual in your pool

Individually wrapped for easy and safe handling

Eliminate overwhelming chemicals in hot tubs. No more chemical smell or issues like rashes, itching, coughing, sneezing, tight skin or faded suites.

The most natural hot tub water there is. Used over 10 years commercially, now available for residential hot tub treatment. Easy maintenance for worry free hot tubbing.

iONRx must be used with ultra low levels of chlorine. pH should be maintained as well.

DEVELOPS A CLEAR POOL WITH SOLAR POWER: Finally, you can have a beautifully blue pool, without the maintenance! The magic behind this automatic pool cleaner is the ions it creates to destroy growth in your pool… all from Solar Power!

USE 80-PERCENT LESS CHLORINE, SAVE $300-TO-$500 EVERY YEAR: With less chlorine & shock, this solar pool ionizer will pay for itself… SERIOUSLY! Put money back into your pocket by transforming your pool into a biologically healthy & clear water!

NO HARMFUL CHLORINE, ENDS BLEACHED CLOTHES & HAIR: Invest in your family’s health & use a chlorine-free shock! Your kids will certainly thank you for the switch because they won’t have to worry about dry & red eyes or having their clothes bleached!

SIMPLIFIED MAINTENANCE: With this complete spa treatment kit, featuring low chemical content and natural ingredients, you can clean your spa with ease. Whether for an indoor or outdoor hot tub or spa, EcoOne water care products ensure soft, clean, and all-around healthier water. Our 6-month water care kit contains one 1 lb. bottle of OneShock tablets, and six 8 oz. bottles of SPA Monthly water conditioner.

WATER TREATMENT AT ITS BEST: For use in hot tubs large and small, our water treatment system begins with a once-a-month water conditioner that reduces foam, increases filter efficiency, and stabilizes alkaline levels in the water. Once a week, use OneShock tablets, our virtually hands-free pool-sanitizing treatment tablets. They will keep the water in your pool or spa crystal clear.

NATURAL HOT TUB CARE: Perfect for those with sensitive skin, our products contain minimal or no chlorine. They are free of phosphates, perfumes, fragrances, and dyes, to prevent itchy skin and red eyes. This spa water treatment also prevents chemical burn, and chlorine-related skin irritation, as it has skin-soothing, natural, and biodegradable ingredients, including coconut. Our spa care line is proudly made in the USA, and is never tested on animals.

【Easy to Use of Chlorine Floater 】Easy Rotating ring allows you to add chlorine tablets without opening its top or bottom. It stayed upright and doesn't flip over or sinks to the bottom of the pool like some other pool chlorine float for swimming pool. You can load up to 4 chlorine tablets (3”) into chlorine dispenser . And very creative ideas, not only can be used as a tool for loading chlorine tablets/ bromine tablets, but also can be used as solar pool light to decorate your pool or hot tub.

【Strong and Durable】The chlorine tablet holder is made of ABS plastic, so the chlorine floater is very strong and durable. And It can avoid rupture and fade caused by high temperature sunlight. Our chlorine tablet floater with solar flame light has unique design, this one is super cool and adds a great vibe to your pool. Because this little guy chlorinates your pool while gives a warm light at the same time.

【Extra-large Capacity & Multi-scene Use】You can use the chlorine dispenser with lights in an hot tub/outdoor fountain/ pond/pool or place the the chlorine floater in a place that doesn't always get water cycled through, it works nicely. The large capacity design ensures that you don't need to add chlorine tablets frequently, saving you more time and energy. And you can folds into itself for space savings when not in use. Or use it as a lighting decoration in winter. Highly recommend!

Contains 4 lbs. Winter Shock, 2 Qt. Winter Clear and 2 Qt. Anti-Stain Control

Includes complete winterizing instructions

For use in all swimming pools

U.S. Based Manufacturer. Solar panel is under thick covering allowing our product to last years longer than our competitors. Beware of cheaply built alternatives. Lifetime Replacement Program - see description for details.

Our Solar Pool Cleaner will prevent algae and reduce the amount of chlorine up to 85%. Our ionizers work perfectly fine with small amounts of Chlorine and, consistently, the pH becomes very stable. Works in salt water pools.

The power of the sun works with an underwater ion-disbursing anode to release copper ions that are very effective at killing algae and keeping your pool clean and pure. Does not require batteries

[Fully Meet the Needs of Hydroponic Growers] pH Meter: Monitoring the pH level of the hydroponic nutrient solution to ensure it can be maximum accessed by the plants. TDS & EC Meter: Keep tracking of the amount of nutrients in your solution to prevent it from being too high or too low and hindering the healthy growth of plants.

[Helpful for Aquarist] pH Meter: Keep the balance of pH value of fish tank, drastic fluctuations in pH value can seriously damage the survival environment of fish. TDS & EC Meter: Monitor the amount of ionic salts in the tank to remind fish keepers when to change the water to balance the ratio of various substances.

[Friendly for Pool Owners] pH Meter: Keep the pool water at the right pH level, which is friendly to swimmers' skin and eyes. TDS & EC Meter: Keep the TDS value of the pool water appropriate can extend the life of the pool equipment.

BENEFIT: Sanitizer, clarifier, and algaecide to protect your swimming pool and swimmers with one easy, convenient, and individually wrapped 3-inch tablet

CLEAR BLUE WATER: This advanced formula sanitizes, clarifies, and kills algae for beautiful, clean, and clear water all season

SLOW DISSOLVING, LONG LASTING: Sun protected for longer chlorine life, HTH 3” Individually Wrapped Chlorine Tabs Advanced dissolve slowly and last up to one week

🦩Cute Top - Florida flamingo shape top adds fun and décor to your pool.

🦩Durable Material - PP and ABS Plastic can avoid Fade and Rupture caused by high-temperature sunlight. Chlorine Float can be used for several years.

🦩Large Capacity - Dispenser accepts 1” and 3” Chlorine/ Bromine tablets with storage for up to four tabs at once.

Controls Algae

Prevents corrosion and scale

Removes organic contaminants for clear water

GENERATES CHLORINE FROM SALT – The MegaChlor spa and above ground pool chlorinator produces chlorine using a small amount of ordinary salt (sodium chloride) dissolved in water, making it the ideal solution for pools, spas, cold plunges, ice bath tubs, portable hot tubs or inflatable hot tubs. Made in the USA, this chlorinator takes the guesswork out of water maintenance.

GENTLE ON EYES AND SKIN – The electrolysis process produces chlorine from salt, which naturally softens water for above ground pools and swim spas. The soft, gentle feel makes the MegaChlor a better choice for those with sensitive skin.

SIMPLIFIES POOL MAINTENANCE – The self-cleaning reverse polarity system reduces time spent worrying about maintenance, giving you more time to relax and enjoy the clean water. MegaChlor features 10 time-based power levels to fit the chlorine needs of your pool or spa.

Compatibility: Compatible with Hayward Goldline AquaRite, SwimPure, AquaRite XL, NatureSoft, SmartPure, Mineral Springs and Blue Essence Systems. BLW1T9H salt cell is not compatible with Hayward automation system, such as OmniLogic, OmniHub, ProLogic, AquaLogic and AquaPlus, etc.

Software Revision: Requires software revision levels of r1.50- the current version. Press the diagnostics button on your control 7 times to see your systems current software revision level.

Cell plates provided by American Company. The yellow housing is more resistant to dirt.

Turbo Cell or use with Goldline AQR - PRO, AQR 1.50 or greater , or AQR-X296

For use with Goldline AQR–PRO operating with firmware version 1.10 or later, AQR firmware version 1.50 or greater , ProLogic P4 operating with firmware 4.10 or later, ProLogic PS operating with firmware 4.10 or later

Right size your cell for the most effective chlorination possible .Reliable performance - delivered only by a genuine Hayward TurboCell

COMPATIBILITY: BLUE WORKS salt cell for pool model BLW1T15H is compatible with Hayward salt cell Model T-CELL-15.Compatible with Hayward Goldline AquaRite, SwimPure, AquaRite XL, NatureSoft, SmartPure, Mineral Springs and Blue Essence Systems. Requires software revision levels of r1.50- the current version. Press the diagnostics button on your control 7 times to see your systems current software revision level.

NOT COMPATIBILITY: BLW1T15H salt cell is not compatible with Hayward automation system, such as OmniLogic, OmniHub, ProLogic, AquaLogic and AquaPlus, etc.ms. BLW1T15H salt cell is not compatible with Hayward automation system, such as OmniLogic, OmniHub, ProLogic, AquaLogic and AquaPlus, etc.

RELIABLE PERFORMANCE: Cell plates provided by American Company. Among Top10 the Best Salt Chlorinators 2023 by Ezvid Wiki.