Best Hth Shock 2026

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Last Updated - 03.02.2026

Best Choice

01

Generisch

HTH® Granular Calcium Hypochlorite Inorganic, Shock Chlorine, 5 kg

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9.6

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Works very quickly against algae.
Provides crystal clear water very quickly, eliminates turbidity.
For shock treatment in green or cloudy water. Quickly and effectively increases the active chlorine content. Instant effect
For shock treatment in green or cloudy water. Quickly and effectively increases the active chlorine content. Immediate effect is visible
Completely free from cyanuric acid (stabilisers)
Avoids the water problems associated with over-stabilisation

72,95 €
02

HEXAGON PISCINE ET SPA

HTH Shock Powder - 4kg | Shock Chlorine Chlorine Non Stabilised - Shock Disinfection - Fast Resolution Calcium Hypochlorite + 10 HP Tests 6 in 1

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9.4

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

This shock chloride with calcium hypochlorite prevents problems with over-stabilisation
The strongest shock chloride on the market
Powder formula: instant dissolution
More practical: handle and dosing cap
10 HPS test strips, 6-in-1: pH, total chloride (CL total), free chlorine/bromine (Cl / Br), alkalinity (TAC), cyanuric acid (stabilizer), hardness (TH)

69,42 €
Value for Money

03

HTH

HTH Shock 2 kg - Shock Chlorination for the Pool (75% Active Chlorine Content)

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26% Off
9.3

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Non-stabilised chlorine: avoids over-stabilization
Use biocides safely. Always read the label and product information before use. No.: N-76433
Shock treatment: 15 g for 1 m³ of water / raise the chlorine value by 1 mg/l: 1.5 g for 1 m³
Instant dissolution: no residue in the water
Extra fine granules: quick and effective effect
Easy dosage: includes practical measuring cap
Calcium hypochlorite: for clear and clean pool water

27,90 € 37,75 €(26% Off off)
04

HTH

HTH Shock 4 kg - Shock Chlorination for the Pool

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9.2

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

NO OVERSTABLIZATION - Prevents the build-up of unwanted chemicals.
INSTANTLY DISSOLVE: For quick and even distribution in the water.
FAST AND EFFECTIVE SHOCK CHOLINATION: Instantly clarifies green or cloudy water.
EASY TO USE: Includes measuring cup for precise dispensing.
Shock disinfection: 150 g / 10 m³
Raise active chlorine content by 1 mg/l: 15 g/10 m³
High active chlorine content: less product for more water

69,30 €
05

HTH

HTH Shock 1.6 kg - Shock Chlorination for the Pool

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21% Off
8.9

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

️ Non-stabilised chlorine: avoids over-stabilization
️ Instant dissolution: no residue in the water
️ Extra fine granules: quick and effective effect
️ Easy dosage: includes practical measuring cap
️ Calcium hypochlorite: for clear and clean pool water
Shock chlorination: 150 g = 10 m³
Increase active chlorine content by 1 mg/l: 15 g per 10 m³

34,67 € 43,95 €(21% Off off)
06

POOL Total

HTH Shock 1.6 kg Chlorine | Lightning Solution for Green or Cloudy Water | The Most Concentrated Hypochloride on the Market | Instant Soluble Chlorine Shock Powder | Inorganic Shock Treatment

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8.8

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Use biocidal products carefully. Always read the label and product information before use. BAuA Reg. No: N-76433
The formation of insoluble substances below 4% (distilled water) is avoided.
Prevents problems associated with over-stabilization.
Instant solution for green or cloudy water.
Fast dissolving powder compared to traditional granules.
Contains inorganic chlorine without stabiliser (cyanuric acid).

36,95 €
07

POOL Total

HTH Spa Chlorine Shock Powder 1.0 kg Whirlpool Extreme Effectiveness - Also Against Legionella Instant and Residue-Free Dissolving Powder Compatible with All Filter Types Inorganic

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8.7

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Use biocidal products carefully. Always read the label and product information before use. BAuA Reg. No: N-76434
Isocyanuric Acid Free: it does not contain any isocyanuric acids or stabilizers, which means you don't have to worry about unwanted chemical residues.
Instant and residue-free dissolving powder: the powder dissolves immediately and completely without leaving residue, ensuring easy application and a clean pool environment.
High chlorine content: With an average chlorine content of about 65%, this product provides a strong disinfection performance for your pool.
EXTREME EFFECTIVENESS This product is characterized by its exceptional effectiveness, especially in the fight against Legionella
EFFECTIVE PROTECTION In addition to its effectiveness against Legionella, this product also provides reliable protection against a host of other potential pool problems and contaminants.
COMPATIBLE WITH ALL FILTER TYPES This product is compatible with all types of pool filters, making it a versatile choice for your pool maintenance.

25,95 €
08

HTH

Hypochlorite de Calcium - Chlore Choc HTH® Shock Poudre 2 kg

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8.5

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Instant Solution
Ideal for shock treatment.
Fill green or opaque water.
Dose shock dosage: 1 dosing plug (300 g) every 20 m3
75% active chloride average content. Unique on the market.

36,95 €
09

HTH

Hypochlorite de Calcium - Chlore Choc HTH® Shock Poudre 2 kg

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8.3

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Instant Solution
Ideal for shock treatment.
Fill green or opaque water.
Dose shock dosage: 1 dosing plug (300 g) every 20 m3
75% active chloride average content. Unique on the market.

36,45 €
10

Generisch

HTH® Granular Calcium Hypochlorite Inorganic, Shock Chlorine, 5 kg

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8.0

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Show more
Main highlights

Works very quickly against algae.
Provides crystal clear water very quickly, eliminates turbidity.
For shock treatment in green or cloudy water. Quickly and effectively increases the active chlorine content. Instant effect
For shock treatment in green or cloudy water. Quickly and effectively increases the active chlorine content. Immediate effect is visible
Completely free from cyanuric acid (stabilisers)
Avoids the water problems associated with over-stabilisation

69,30 €