£12.00

Relax 1kg Granular Shock Treatment Hot Tub Spa Swimming Pool Chlorine Oxidiser

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About as cheap as it gets. The only time it was cheaper was 8 months ago.

£12 today · all-time low £12 (Sep 2025) · usually the usual

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Price History & Forecast

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Last 632 days • 632 data points (No recent data available)

Historical
Generating forecast...
£14.95 £11.69 £12.40 £13.11 £13.83 £14.54 £15.25 24 May 2024 28 October 2024 04 April 2025 09 September 2025 14 February 2026

Price Distribution

Price distribution over 632 days • 5 price ranges

Days at Price
Current Price
311 days · current 137 days 108 days 28 days 48 days 0 78 156 233 311 £12-13 £13-13 £13-14 £14-14 £14-15 Days at Price

Price Analysis

Most common range: £12-13 (311 days, 49.2%)

Price range: £12 - £15

Price levels: 5 price ranges over 632 days

Description

Every so often it is necessary to "Shock" the swimming pool or hot tub and it is a routine part of water treatment that every pool owner should know about. It is sometimes called super Chlorinating as the treatment uses Relax Granular Shock Chlorine, which has fast dissolving granules and is added in quantities from 3 to 5 times the normal addition rates. The addition of such a large quantity shocks the pool and kills the bacteria and organic matter in a single treatment. It raises the Chlorine level significantly for a short while and boosts the level of effective free chlorine. Safety Warning DANGER May intensify fire; oxidiser. Harmful if swallowed. Causes severe skin burns and eye damage. Very toxix to aquatic life. Keep out of reach of children. Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking. Wear protective gloves/protective clothing/eye protection/face protection. IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water/shower. Immediately call a POISON CENTER or doctor/physician. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a POISON CENTER or doctor/physician. Dispose of contents/container to an authorised waste collection point. Contact with acids liberates toxic gas. WARNING! Do not use together with other products, may release dangerous gases (chlorine). GENERAL PRECAUTIONS. Never mix with any other chemicals including cleaning products, weedkillers and other chlorine products, as a dangerous reaction may occur. When pre-dissolving product always use a clean plastic container. If in doubt wash thoroughly before use. Always handle product in a well ventilated area, preferably outdoors. When dissolving product always add product to water and not vice versa. Do not use more than 100g of product per 10 litres of container water when pre-dissolving. Repeat treatment if required. Always wash hands thoroughly after handling pool chemicals. Ensure Chemicals do not become damp in storage. Store in a cool, dry place. Instructions and dosage given are a guide only for most effective use.

Key Features

For shock treatment of pool water, and also for regular use pool water in soft water areas

For shock treatment of pool water, and also for regular use pool water in soft water areas

Product Specifications

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