top of page

Relax Spa Hot Tub Chlorine Granules (500ml)

£6.00Price

Stabilised Chlorine Granules


Keep your pool or spa water clean, clear and hygienic with these fast-dissolving stabilised chlorine granules. Ideal for regular dosing, they produce free active chlorine to help kill bacteria and other harmful organisms.

Suitable for both swimming pools and hot tubs, the granules dissolve quickly and have little effect on the pH of the water. They can also be used for shock dosing smaller above-ground pools and spas.


Key Features

  • Stabilised chlorine granules

  • Suitable for swimming pools and hot tubs

  • Rapid dissolving and long lasting

  • Helps kill bacteria and other harmful organisms

  • Little effect on water pH

  • Suitable for regular dosing and shock treatments


Recommended Chlorine Levels

  • Hot tubs & spas: 3–5 mg/l (ppm)

  • Swimming pools: 1–3 mg/l (ppm)

  • Recommended pH: 7.2–7.6


Application Instructions

  1. Test the water and maintain the pH between 7.2–7.6 for the best results.

  2. Maintain free chlorine levels of 3–5 mg/l (ppm) for spas and 1–3 mg/l (ppm) for swimming pools.

  3. If the water temperature is above 20°C, the granules can be applied directly to the pool or spa.

  4. Below 20°C, or if preferred, pre-dissolve the granules in a clean plastic container at a maximum rate of 10g per 1 litre of water. Stir thoroughly until completely dissolved, then add the solution to the pool or spa with the pumps running.

  5. Retest the water and repeat dosing if necessary to achieve the required chlorine level.

  6. For spas, periodic shock dosing is recommended, particularly after heavy use.


Dose Rates

Pool / Spa Size

To Increase by 1 mg/l (ppm)

To Increase by 3 mg/l (ppm)

1,000 litre hot tub

2g

6g

1,500 litre hot tub

3g

9g

40,000 litre pool

80g

240g

60,000 litre pool

120g

360g

80,000 litre pool

160g

480g

Please always test your water before and after treatment and follow the product label instructions.

bottom of page