PRICE DROPHot Tub / Spa Premium Chlorine Granules 5KG
Hot Tub / Spa Premium Chlorine Granules 5KG

Hot Tub / Spa Premium Chlorine Granules 5KG

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Following recent changes to shipping regulations post-Brexit, we can no longer lawfully ship Chemicals overseas to addresses in Northern Ireland - please do not attempt to checkout with chemicals in your basket if you are a resident of Northern Ireland.

Use Wave Chlorine Granules 55% for the disinfection of spa and swimming pool water. The granules are completely soluble and have little effect on pH. They also contain a stabiliser to protect against loss of chlorine to sunlight, making them ideal for daily chlorination.

Application - Add WAVE Chlorine Granules 55% into 10 litres of fresh water using a clean plastic container and mix carefully. Slowly pour the solution into the spa or pool water near to the return inlets and rinse out the container thoroughly.

As a general guide, to increase a 1500L spa from 0ppm to 5ppm you will need to add at least 12g of Chlorine Granules. A heaped teaspoon holds approximately 8g of chlorine granules.

Dose Rate - Chlorine Granules 55% to 10 cubic metres of spa or pool water. This daily dose rate is offered as a general guide for private spas and pools. Heavily used spas and pools or those maintained at higher temperatures may require increased dosage. Test for actual requirements by using a poolside test kit - adjusting the dose rate as necessary to maintain a chlorine level of 1-3 ppm or mg/litre.

pH Control - To obtain maximum benefit from WAVE Chlorine Granules 55%, the pH of the water should be maintained around 7.4 and between 7.2 and 7.8 at all times. Chlorine is less effective at high pH ie. above 7.8.
Delivery & Returns

  • Pre Order - Please see product page for accurate pre order delivery dates
  • DPD/Royal Mail 48 Hour Service - FREE for orders over £40 / £4.99 for orders under £40

All orders placed by 12pm Monday to Friday are shipped on the same day if you choose this option.

DPD offer convenient alternative options for the collection of your parcel at a designated pick up a location nearby, plus provide you with a one hour window for your delivery.

Please note in certain outlying areas next day services may not arrive until the second working day and weekend delivery services may be limited.


Shipping rates for UK Highlands and Islands is £11.99 and takes 2-3 working days


Due to increased shipping costs post-Brexit we are unable to ship any orders internationally from UK