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Browse our full HTH range — 28 lawn, garden and outdoor products in stock, with free shipping on every US order and fast dispatch.

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HTH Super Shock 12-pack bottle boosts chlorine for clearer, healthier pool water.

HTH

HTH 52026 Super Shock Treatment – 12 Pack Pool Chlorine Shock, 1 lb Each

$98.88

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HTH 52040B Swimming Pool Shock Ultra bottle pour for easy dosing and clear water

HTH

HTH 52040B Swimming Pool Care Shock Ultra – Cal Hypo Formula, 1 lb (6 Pack)

$61.80

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HTH 42047 chlorine tab in skimmer sanitizing pool water

HTH

HTH 42047 Pool Care 1-Inch Chlorine Tabs with Added Clarifier – Slow-Dissolving, 5 lb

$84.06

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HTH chlorine tabs Advanced bottle – slow-dissolving pool sanitizer

HTH

HTH 3-Inch Chlorine Tabs Advanced - 5 lb | Pool Sanitizer, Clarifier & Algaecide

$53.89

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HTH 6-Way Test Kit compact case for quick pool water checks.

HTH

HTH 6-Way Test Kit for Pools – 100 Tests | Water Chemistry Tester

$35.18

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HTH Pool Care Kit opening bundle for up to 20,000 gallons

HTH

HTH 91022 Pool Care Kit – Open/Close for Up to 20,000 Gallons | 6-Way Test Strips Included

$58.17

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HTH Algae Guard Ultra bottle close-up showing long-lasting algae protection for pools

HTH

HTH Algae Guard Ultra - Long-Lasting Algae Control for Green, Black & Mustard Algae | 32 oz

$42.70

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HTH Salt Shock packets 5x12oz dissolving quickly to treat 10,000 gallons

HTH

HTH 52047 Salt Shock — Stabilized Chlorinator for Saltwater Pools (Treats 10,000 gal, 5x12oz)

$40.89

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HTH Algae Guard Ultra bottle close-up shows long-lasting algae control for pools.

HTH

HTH Algae Guard Ultra 32 oz – Long-Lasting Algae Control for All Pools

$53.62

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HTH Algae Guard Advanced bottle ready for fast pool algae control.

HTH

HTH 67084 Algae Guard Advanced – Fast-Acting Algae Eliminator for All Pool Types, 32 fl oz

$35.74

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HTH Shock Advanced 6-Pack bottle enables quick pool treatment for crystal-clear water.

HTH

HTH 52036R Pool Care Shock Advanced – Cal Hypo Formula, 6-Pack

$40.14

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HTH Green to Blue Pack I shock eradicating algae for clearer water.

HTH

HTH 52038 2-Step Green to Blue Pool Care System – Advanced Shock & Flocculant Kit

$40.59

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HTH D.E. filter aid 10lb container improves pool filtration and clarity

HTH

HTH 67121 D.E. Filter Aid for Pools & Spas – Improve Filtration & Clarity (10 lb)

$42.30

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HTH Algae Guard Advanced bottle pour showing fast-acting algae control for crystal clear pool water

HTH

HTH 67243 Advanced Algae Guard – Fast Acting Algae Control for Green, Black & Mustard Algae (32 oz)

$29.00

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HTH Drop Out Flocculant improves pool water clarity after application.

HTH

HTH 67080 Drop Out Flocculant – Clears Cloudy Pool Water Fast

$42.66

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HTH 52030B shock bottle front shows Cal Hypo formula for quick pool care.

HTH

HTH 52030B Swimming Pool Shock — Cal Hypo Formula, Pack of 6

$33.69

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HTH 67061 stabilizer bottle shown for pool care and chlorine protection

HTH

HTH 67061 Pool Stabilizer – Prolong Chlorine Life & Sunlight Protection (4 Lbs)

$26.30

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HTH Drop Out Flocculant promotes crystal-clear pool water for a refreshing swim

HTH

HTH Drop Out Flocculant 32oz — Clears Cloudy Pool Water Fast

$31.11

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HTH Super Clarifier bottle pour demonstrates simple dosing for clearer pool water

HTH

HTH 67023 Super Clarifier – Fast-Acting 32 oz Pool Water Clarifier

$27.52

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HTH Metal & Stain Defense bottle ready for pool treatment to prevent metal staining.

HTH

HTH Metal & Stain Defense 32oz – Prevents Metal Stains & Scale for All Pool Types

$24.02

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HTH 67212 Advanced Clarifier restores crystal-clear pool water.

HTH

HTH 67212 Advanced Clarifier – Crystal Clear Pool Water in 24 Hours | Improves Filter Efficiency

$10.43

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HTH 42049 chlorine tabs bottle closeup for long-lasting pool sanitation

HTH

HTH 42049 1-Inch Chlorine Tabs with Clarifier – Slow-Dissolving Pool Sanitizer (1.5 lbs)

$28.99

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HTH Filter Cleaner bottle pour shows overnight action for cleaner filtration.

HTH

HTH 67227 Filter Cleaner – Quickly Cleans Pool Filters & Prolongs Life | 32 oz | All Filter Types

$21.52

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HTH Pool Care pH Down bottle pour for quick pH balance in pool.

HTH

HTH Pool Care pH Down – Lowers pH, Balances Pool Water, 5 Lbs

$9.81

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HTH Calcium Hardness Up bottle pour balancing pool water to prevent corrosion

HTH

HTH Calcium Hardness Up 67059 – Raise Pool Calcium Hardness & Protect Surfaces (4 Lbs)

$14.35

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HTH Alkalinity Up bottle label detail highlighting benefits and usage

HTH

HTH Alkalinity Up 67060 - Raise Pool Alkalinity & Stabilize pH (5 lb)

$14.85

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HTH Spa Alkalinity Up bottle closeup showing stable water balance

HTH

HTH Spa Alkalinity Up – Raise Alkalinity and Stabilize Spa pH (1.25 lb)

$13.92

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HTH 1279R pool care 6-way test strips kit ready for quick, accurate checks.

HTH

HTH 1279R Pool Care 6-Way Test Strips | 35 Count & Test to Swim App

$14.47

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Browse our full HTH range — 28 lawn, garden and outdoor products in stock, with free shipping on every US order and fast dispatch.

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