Shock dosing your Lay-Z-Spa water refers to adding larger quantities of chemicals to your hot tub's water in order to break down any organic waste and contamination and re-establish a positive level of water cleanliness. A shock dose is often performed using chlorine granules, with chlorine tablets being used to maintain the correct daily chlorine level.

 

How to shock dose 

 

When do I need to shock my spa water?

Your Lay-Z-Spa water should be shocked when:

  • You first fill up your Lay-Z-Spa
  • At the first signs of algae or slime
  • After periods of heavy usage
  • After a loss of water clarity or quality

How often should I shock my spa water?

It is good practise to shock treat the spa water with ClearWater Chlorine Granules after a period of high usage. This will help to rectify the sanitizer level, prevent the growth of microorganisms and help maintain sparkling, crystal clear water. After treatment, water quality and clarity is often completely restored.
 
How to shock dose

 

How to shock dose

Shocking your hot tub is essential for hot tub maintenance by helping to prevent the build of bacteria. By shock dosing your hot tub it reduces the need for high chemical doses; aids in eliminating bacteria, viruses, and algae; and prolongs the life of your spa. Experts recommend shocking your hot tub before first use and then at least once a week - initial setup only, should be maintaining levels daily so not required to keep your water clean and clear.

 

To shock dose, follow these six steps:

  1. Ensure that your spa is filled with water up to the recommended level.

  2. Turn on the Water Filtration System but ensure the massage system is turned off

  3. There are two types of shock dose:
    • Commissioning Chlorine Shock Dose: This is the shock does you add to your spa when you first add water to it
    • Normal Chlorine Shock Dose: This is the shock dose you add to your spa when it has already previously had a Commissioning Chlorine Shock Dose.
  4. Check the water capacity of your hot tub. The size of your hot tub will impact just how much chlorine you need to add to your spa. Use the Shock Dose Recommendations Table to see how much Chlorine you need to add.

  5. After shock treating your Lay-Z-Spa water, wait a minimum of 24hrs then test chlorine level. Bathing can start when chlorine level is 5ppm or less (ideal 3-5ppm).

  6. Wash your hands. Once you’re done shocking your hot tub, wash your hands to ensure none of the shock treatment is lingering on your fingers.

Lay-Z-Spa chemical maintenance 

Shock dose recommendations table

The table below shows the recommended Commissioning Shock Dose quantities for each model.

 

Lay-Z-Spa Model

Water capacity in Litres

Chlorine Granules Shock Dosage

20g per 1000 Litres

Teaspoons (one teaspoon = approx. 5g)

Bali AirJet

669

13

3

New York AirJet

806

16

3

Honolulu AirJet

916

18

4

Riviera AirJet

800

16

3

Havana AirJet

669

13

3

Tahiti AirJet

669

13

3

St Tropez AirJet

935

19

4

Vegas AirJet

848

17

3

Monaco AirJet

1540

31

6

Miami AirJet

800

16

3

Palm Springs AirJet

916

18

4

Paris AirJet

806

16

3

Hawaii AirJet

840

17

3

Siena AirJet

509

10

2

Havana AirJet

669

13

3

St Moritz AirJet

1190

24

5

Helsinki AirJet

1123

22

4

Hawaii HydroJet Pro

795

16

3

Maldives HydroJet Pro

1050

1050

4

Palm Springs HydroJet

795

795

3

 

Please note: The table is only applicable to Clearwater Chemicals. When it comes to shocking your hot tub, read the label to ensure you are conducting the spa shock correctly. Dosages are only approximate and the effect of chemicals on your water can vary each time you use them, depending on exact amount of water in your spa, water type, water temperature, positioning of spa etc. Therefore it is essential to test the water every time before you use it.

 How to shock dose

 

Lay-Z-Spa ClearWater daily dosing rates:

Following a shock dose it is important that you continue to monitor the chemical levels of your hot tub to ensure the chlorine levels stay at the recommended levels. The below table shows some guidance as to recommended dosage amounts per each Lay-Z-Spa model. We recommend using a ClearWater Dip Test Strip to monitor your hot tub's chlorine, Alkaline and pH levels.

Lay-Z-Spa Model Water capacity in Litres Chlorine Granules Daily Dosage
9g per 1000 litres Teaspoons (one teaspoon = approx. 5g)
Bali AirJet

669

6

1
New York AirJet

806

7

1
Honolulu AirJet

916

8

2
Riviera AirJet

800

7

1
Havana AirJet

669

6

1
Tahiti AirJet

669

6

1
St Tropez AirJet

935

8

2
Vegas AirJet

848

8

2
Monaco AirJet

1540

14

3
Miami AirJet

800

7

1
Palm Springs AirJet

916

8

2
Paris AirJet

806

7

1
Hawaii AirJet

840

8

2
Siena AirJet

509

5

1
Havana AirJet

669

6

1
St Moritz AirJet

1190

11

2
Helsinki AirJet

1123

10

2
Hawaii HydroJet Pro

795

7

1
Maldives HydroJet Pro

1050

9

2
Palm Springs HydroJet

795

7

1

 

 

 

Please note: The table is only applicable to Clearwater Chemicals. Dosages are only approximate and the effect of chemicals on your water can vary each time you use them, depending on exact amount of water in your spa, water type, water temperature, positioning of spa etc. Therefore it is essential to test the water every time before you use it.

 

For frequently asked questions on shock dosing your Lay-Z-Spa and other chemical guidance, please visit our Chemicals Guide. Need more chemicals? Explore the range of ClearWater Chemicals.