Blue Horizons Granular Shock Pouches 4.8kg (16x 300g sachets)

Blue Horizons Granular Shock Pouches 4.8kg (16x 300g sachets)

Keep your pool water clean and safe with Blue Horizons Granular Shock. These easy-to-use shock chlorine pouches also known as calcium hypochlorite help get rid of bacteria, algae and chloramines that can build up in swimming pool water over time. They're the simplest way to keep your pool look clear and fresh throughout the season. 

Each pouch is pre-measured sachets, these shock pouches are ideal for regular pool maintenance and make storage easier by helping keep the chlorine fresh, especially during the quieter winter months. 

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What is Granular Shock? 

Blue Horizons Granular Shock is a strong chlorine treatment used to raise chlorine levels in swimming pools. It's commonly used as a shock treatment to remove contaminants, destroy bacteria and restore water clarity. 

Regular shock treatments helps break down chloramines also known as combined chlorine, which are often the reason pools smell heavily of chlorine, and can cause eye irritation. 

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Why Use Granular Shock in my Swimming Pool? 

Even well maintained pools can build up contaminants from swimmers, weather conditions and organic debris. Over time, this reduces chlorine efficiently and can lead to cloudy water, algae growth and unpleasant odours. 

Using Blue Horizons Granular Shock helps to: 

• Destroy bacteria
• Break down chloramines
• Clear cloudy water
• Helps prevent algae growth
• Boost chlorine levels quickly
• Keep pool water balanced

Routine shock treatment are recommended weekely, or fortnightly, especially in periods where the pool is in busy use. 

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How to Use Blue Horizonz Granular Shock

For best results, always test and balance your pool water before application.

 

Application Instructions

• Step 1: Maintain pH levels between 7.2 – 7.6. If the level is out of range, adjust accordingly.
• Step 2: Keep routine chlorine levels between 1 – 3mg/l (ppm).
• Step 3: Pre-dissolve this product in a clean plastic container at a maximum rate of 100g of product per 2.2 gallons (10 litres) of clean warm water. Stir throughly until fully dissolved. 
• Step 4: With the pump running, slowly add the solution near the pool inlets to aid distribution. 
• Step 5: Repeat dosing if required to reach desired chlorine level. 
• Step 5: Keep filtration running until any temporary cloudiness in the pool water clears. 
• Step 6: After shock treatment, allow the chlorine to drop below 5mg/l before swimming. Always wait for at least 30 minutes before bathing. 

We also recommend removing your pool cover during shock treatment. 

 

Dosing Rates

 

Water Volumes		Approx. increase in chlorine level using:
Litres	Gallons	1 x 300g pouch	2 x 300g pouch
11,365	2,500	17mg/l (ppm)	34mg/l (ppm)
22,730	5,000	8.5mg/l (ppm)	17mg/l (ppm)
45,460	10,000	4.5mg/l (ppm)	9mg/l (ppm)
68,190	15,000	3mg/l (ppm)	5.5mg/l (ppm)

 

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Frequently Asked Questions: 

 

How often should I shock my swimming pool? 

Most pools benefit from shock treatment weekly, or fortnightly, depending on usage, weather and water condition. 

 

What is Granular Shock used for? 

Blue Horizons Granular Shock Pouches are used to quickly raise chlorine levels and destroy bactera, algae and chloramines in swimming pool water. 

 

Why does my pool smelly strongly of chlorine? 

A strong chlorine smell is often caused by chloramines rather than too much chlorine. Shock treatment helps break these contaminants down.