How To Shock Dose Your Lay-Z-Spa Hot Tub

Shock dosing your Lay-Z-Spa water refers to adding larger quantities of hot tub chemicals to your 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, whilst chlorine tablets are used to maintain the correct daily chlorine level.

Chlorine shock dose for inflatable hot tubs.

When Do I Need To Shock My Hot Tub Water?

Your Lay-Z-Spa hot tub 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
  • After refilling with fresh water

How Often Should I Shock My Hot Tub Water?

It is good practice to shock dose hot tub 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 A Hot Tub

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.

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 dose 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 below to see how much Chlorine you need. If your water is below 20°C, pre-mix in a jug of warm water. If your spa is over 20°C, you can add it straight in. After this, we recommend activating the massage system for a short period of time to circulate the chlorine.

5 After giving a shock treatment to your Lay-Z-Spa water, wait for a minimum of 24hrs then test chlorine level. Bathing can start when the 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 dosing a hot tub with chlorine

Lay-Z-Spa Shock Dose Recommendations Table

Lay-Z-Spa ModelWater capacity in LitresBased on 20g per 1000 LitresTeaspoons (one teaspoon = approx. 5g)
Bali AirJet669133
New York AirJet806163
Honolulu AirJet916184
Riviera AirJet800163
Havana AirJet669133
Tahiti AirJet669133
St Tropez AirJet935194
Vegas AirJet848173
Monaco AirJet1540316
Miami AirJet800163
Palm Springs AirJet916184
Paris AirJet806173
Hawaii AirJet840163
Siena AirJet509102
St Moritz AirJet1190245
Helsinki AirJet1123224
Hawaii HydroJet Pro795163
Maldives HydroJet Pro1050214

For a more complete list of Lay-Z-Spa models and shock dosing recommendations, please visit our hot tub chemicals guide.

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.

Lay-Z-Spa ClearWater hot tub chemicals. Chlorine shock dose.

ClearWater Chemicals Recommended Daily Chlorine 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 stay at the recommended levels. The below table shows some guidance as to the recommended dosage amounts per a selection of Lay-Z-Spa models. We recommend using a ClearWater Dip Test Strip to monitor your hot tub's chlorine, Alkaline and pH levels.

Lay-Z-Spa ModelWater capacity in LitresBased on 9g per 1000 LitresTeaspoons (one teaspoon = approx. 5g)
Bali AirJet66961
New York AirJet80671
Honolulu AirJet91682
Riviera AirJet80071
Havana AirJet66961
Tahiti AirJet66961
St Tropez AirJet93582
Vegas AirJet84882
Monaco AirJet1540143
Miami AirJet80071
Palm Springs AirJet91682
Paris AirJet80671
Hawaii AirJet84082
Siena AirJet50951
St Moritz AirJet1190112
Helsinki AirJet1123102
Hawaii HydroJet Pro79571
Maldives HydroJet Pro105092

For a more complete list of Lay-Z-Spa models and shock dosing recommendations, please visit our hot tub chemicals guide.

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.

From reducing chlorine levels to preventing cloudy water, explore our frequently asked chemical-related questions on shock dosing your Lay-Z-Spa by visiting our Chemical Guide. If you need more hot tub chemicals, explore the ClearWater Chemicals Range.