chlorine granules for hot tubs and pools

Chlorine Granules (5KG)

Name: Chlorine Granules (5KG)
Brand: Lay-Z-Spa
SKU: CH0040
Price: 24.99 GBP
Availability: InStock

SKU: CH0040

£24.99

£39.99 (Save 37%)

Save 38%

In stock

Fast-dissolving granules for quick chlorine boosts
Stabilised chlorine is more effective and long-lasting
Extremely effective way to kill bacteria & harmful organisms
Quick and simple to use for shock dose and regular maintenance

Quantity:

3 For 2 On Chemicals And Accessories

3 For 2 On Hot Tub Chemicals and Accessories

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With our 3 For 2 offer across Lay-Z-Spa accessories and Clearwater chemicals, you can accessorise for a bit of luxury and grab those essential hot tub chemicals and save.

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I'm in the End of Summer Sale

End of Summer sale

Summer might not be over, but we're offering some unmissable end-of-season savings:

Up to £200 off selected hot tubs
Free gift with every hot tub
Up to 47% off selected accessories, chemicals and spare parts.

Offer ends 10am 01.09.25

See Terms & Conditions here.

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Delivered next working day if ordered Mon-Fri before 2pm

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Chlorine Granules (5KG)

£24.99

£39.99 (Save 37%)

Product Details

What are Clearwater® Chlorine Granules for?

ClearWater Stabilised Chlorine Granules are used to sanitise hot tub water. The chlorine granules produce free active chlorine, which kills bacteria and other contaminants. These fast-dissolving chlorine granules are perfect for shock dosing and for maintaining healthy water.

The ClearWater chlorine treatment is easy to apply and, because it has minimal impact on the water’s pH levels, it makes maintaining a pool or hot tub incredibly simple.

How do Clearwater® Stabilised Chlorine Granules work?

When applied and circulated through the water, Clearwater® Stabilised Chlorine Granules release free chlorine to neutralise bacteria, algae and contaminants, keeping water safe.

Clearwater® Stabilised Chlorine Granules - Quick Start Guide

Step 1: Test the water. Chlorine is needed if readings show below 1-3ppm in pools or 3-5ppm in hot tubs.

Step 2: Measure the quantity you need (refer to the label). 2g of chlorine raises by 1ppm in 1000L of water.

Step 3: Dissolve chlorine granules in a container of warm water. Pour dissolved mixture into hot tub water.

Step 4: Run the filter and leave for 4 hours, then re-test the water. Aim for a reading of 3-5ppm

As with all chemical products, time should be taken to carefully read through instructions and warnings.

FAQs

How do I use Clearwater® Stabilised Chlorine Granules in my pool or hot tub?

‑ Measure the quantity of chlorine granules you need
‑ Dissolve the chlorine granules in a jug of warm water
‑ Pour the dissolved chlorine into your hot tub or pool
‑ Circulate the water using the AirJets for a few minutes (hot tubs only)
‑ Leave for 4 hours and re‑test the water
‑ The ideal free chlorine reading is between 3 and 5ppm (parts per million) in a hot tub or 1 and 3ppm (parts per million) in a pool

Top Tip: If the water temperature exceeds 20°C then the recommended amount of chlorine granules can be poured straight into the water. However, we always recommend that chlorine granules, and any other pool or hot tub chemicals, should be dissolved in a plastic container of water before application.

How much of the Clearwater® Stabilised Chlorine Granules do I need in my pool or hot tub?

The amount of chlorine granules you need to add to your pool or hot tub depends on the volume of water.
Top tip: a level teaspoon equals approximately 5g of chlorine
A hot tub or small pool of 1,000 litres requires 2g to raise chlorine levels by 1ppm (parts per million)

Need help with pool chemicals?

For help and advice with pool chemicals and water maintenance, please visit our Pool Chemicals Guide: Here