Blue Horizons Rapid Shock – A powerful, fast dissolving oxidiser


A powerful, fast dissolving oxidiser

High chlorine content – economical

Destroys swimmer wastes and helps prevent/kill algae



Blue Horizons Rapid Shock 

  • Helps prevent/remove algae and destroys swimmer wastes.
  • Rapid dissolving
  • pH 11.5
  • Part of the BOAST System

Application Instructions

  1. Maintain pH levels within the ideal range 7.2 – 7.6. If the level is not in this range, adjust.
  2. Maintain free chlorine residuals routinely in the 1 – 3mg/l (ppm) range. Shock or oxidising procedures are recommended either weekly or fortnightly with a maximum of 10mg/l (ppm) for a full shock treatment.
  3. If the water temperature is 20oC or higher and water depth at least 4ft deep, this product can be carefully broadcast directly over the pool surface. Always check the wind direction before broadcasting. Alternatively, pre-dissolve this product in a clean plastic container at a maximum rate of 100g of product of 2.2 gallon (10 litres) in water. Stir well to ensure product is fully dissolved. Add the resulting solution to the pool whilst the pump (s) are turned ‘on’ preferably near the water inlets to aid distribution.
  4. Repeat dose/application if necessary to achieve the desired level.
  5. After using this product pool water may become temporarily cloudy, so keep the filtration pump running until it clear.
  6. After shock treatment, allow the chlorine to drop below 5mg/l before bathing recommences, and in any event wait for at least 30 minutes before bathing recommences.

Dosing Rates

Water Volumes                                                                      To increase Chlorine Level
Litres/Gallons                                                                         1mg/l      5mg/l        10mg/l
4,545/1,000                                                                                 7g           32g            65g
11,360/2,500                                                                               17g          81g          163g
22,725/5,000                                                                              33g        163g         325g
68,175/15,000                                                                            99g        489g         975g

Additional information

Weight N/A
Pack Size

2kg, 5kg

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