Blue Horizons Granular Shock – A traditional stabiliser-free granular shock


Easy dose sachets
Destroys swimmer wastes and helps prevent/kill algae


Blue Horizons Granular Shock

Key Features/Characteristics

  • Helps prevent/remove algae
  • Destroys swimmer wastes
  • May be used for regular disinfection
  • 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. 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 clears.
  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                                                      1 mg/l        5mg/l    10mg/l
4,545/1,000                                                              7g              35g         70g
11,360/2,500                                                           17g             88g         175g
22,725/5,000                                                          35g            175g        350g
68,175/15,000                                                       105g           525g       1050g

Additional information

Weight N/A
Pack Size

1kg, 2kg, 5kg

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