How To Use Spa Chemicals

Quick Links:

Spa Chemical Safety
Start-Up Procedure
Test Your Spa Water
Weekly Spa Maintenance
How to Dump Spa Water
Spa Chemical Troubleshooting


Water in your spa can only be treated for 3-4 months. After that, the water needs to be dumped and refilled with new tap water and repeat the initial start-up procedure (see dumping procedure).

Spa Chemical Safety

  • Never add water to chemicals, always add chemicals to water.
  • The best way to add chemicals to your Spa is to get a clean bucket and fill it halfway with SPA WATER, add chemicals and dissolve chemicals with a stirrer. Once dissolved put the spa into the cleaning cycle and pour the dissolved chemical slowly over the water.
  • This guide is for general reference only. Always follow the directions on your chemical container.

Spa Chemical Terminology

Dosage directions are always per 1000 litres of water;

  • 1 Teaspoon heaped = 6 gms approx;
  • 1 Tablespoon heaped = 30 gms approx

Cleaning Cycle: means water is coming out of the jets and water is passing through the filter Jets on: means pump is on and squirting out water from various points of the spa

Circulate water: means water is coming out of the jets and water is passing through the filter Safe Chlorine range for swimming is between 1-3 ppm as seen on your test strips.

Easy start-up procedure for your spa pool

Step 1: Test Your Water

  • OK RANGE for pH is between: 7.2 - 7.8
  • OK RANGE for Total Alkalinity is between: 80 – 160.

Use your Test Strips to test the pH and Total Alkalinity of your Spa water (read the test strip instantly).
If the test reading is below the OK range for pH and Total Alkalinity add the appropriate quantity of pH and Alkalinity Increaser.

45 gms per 1000 litres of this product will increase total Alkalinity by 25ppm and will increase pH as well.

Mix spa chemical, put into Spa and press the cleaning cycle, circulate for 20 minutes before going on to step 2.
If the pH and Total Alkalinity is above the OK Range, add Spa World Reducer to reach the OK range.

Step 2: Sanitise Your Spa

  • When using Chlorine Sanitiser add 6gms per 1000 Litres and press the cleaning cycle and circulate for 20 minutes.
  • Every day after that add 6gms per 1000L per day as a daily dose even if you donʼt use the Spa.
  • On the days you do use the spa add sanitiser 20 minutes before you get into the spa.

Note: This is a guide only – you may have to use more or less. 
The daily dose above is based on 2 people using the spa 2-3 times per week. More usage requires more chemicals.

You should follow the directions on your sanitising product.


  • Only wear clothes in the Spa that have been rinsed in water NO WASHING POWDER.
  • Ensure that you DO NOT enter the Spa with oils and body lotions on your body.

Weekly maintenance program for your spa pool or swim spa

One week after your initial Start Up procedure you will need to start your Weekly Spa Maintenance Program (pick a day which suits you e.g. every Saturday morning). Before you go onto step 1, hose out your filter.

Step 1: Shock Your Spa

For water clarity, add 30 grams per 1000L of Spa World shock to your spa and press clean cycle on for 40 minutes (cover off). Spa Shock will help remove chloramines and bather wastes from the previous week.

Step 2: Test Your Spa Water

Using your Test Strips test the pH and Total Alkalinity of your spa water and adjust to the OK range.

Step 3: Sanitise Your Spa Water

Continue using your daily dose of Spa World Lithium- 2 Teaspoons per 1000L of water daily. Repeat the 3 steps above weekly until your water is 4 months old, then dump the water. Refill with new water, then proceed with the EASY START-UP PROCEDURE.

Dumping your spa water

Step 1: Take Your Filter Out and Leave It Out

Step 2: Use Pipe Degreaser

Add Spa Pipe Degreaser, 50ml per 1000 Litres, and press clean cycle for 20 minutes. Leave off for 30 minutes then back on for a further 30 minutes, the process is now finished. You can now dump your water. When the spa is empty, hose out any residue and wipe the spa out with a little Spa Pipe Degreaser on a damp rag. You can also wipe the underneath of the spa cover. Rinse off and leave to dry.

Step 3: Refill Your Spa With Water

Remember to place the hose in the filter pipe (to help eliminate air blocks)

Step 4: Replace your Purezone Filter With A New Purezone Filter

Step 5: Your spa is now ready to proceed with the Easy Start-Up Procedure (see above)

Spa Water Trouble Shooting


Check pH and Total Alkalinity and adjust if necessary. Add 1 cap of Spa World Clarifier per 1000 Litres of water and circulate water for 30 minutes. Some water might need to be circulated more, so keep circulating until clear.


Check pH and Total Alkalinity and adjust if necessary. Add 1 Tablespoon of Shock per 1000 Litres of water, circulate for 1 hour. Add 2 Teaspoons of Lithium per 1000 Litres of water and circulate for 1 hour - this should clear it up. If water is still not clear, keep circulating water until clear.


Use an Anti Foam product, using directions on the container.

If you still have any questions please contact us: 1300 556 558