How Does Shock Dosing Work?

Shocking your Lay-Z-Spa water refers to adding large quantities of chemicals (maybe 5-10 times the normal dose) in order to break down any organic waste and contamination and re-establish a positive level of sanitisation.
 

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 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.
 
We know that chemicals are a pretty confusing part of owning a hot tub, so we have made it super easy for you with shock dosages depending on Lay-Z-Spa model and FAQs.

Lay-Z-Spa Clearwater Daily Dosing Rates:

Please note:
This guide is only applicable to Clearwater Chemicals. If you are using other chemicals, dosages may vary.
Dosages are only approximate depending on exact amount of water in your spa, water type, water temperature, positioning of spa etc.
 

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

 

SHOCK DOSING

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.

HOW TO SHOCK DOSE

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. In order to do this, follow these 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.

     

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

 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).

 

WARNING: You must always test your water before use. Water must be at recommended bathing level before bathing.
 

For frequently asked questions on shock dosing your Lay-Z-Spa and other chemical guidance, please visit our Chemicals Guide.