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Spa Water Maintenance Schedule

Preventive maintenance is the best way to keep your spa and spa water in tip-top shape and more enjoyable.  This can easily be accomplished with a routine schedule of care. By following this basic schedule you can enjoy your spa water regularly.  These are general maintenance guidelines and may need to be varied depending on manufacturer’s recommendations, refer to your spa owner’s manual and always follow the manufacturer’s instructions.


Run your pump to circulate water a minimum of 3 hours a day.  Some spas come with a recirculation pump that accomplishes this task by running on a low speed intermittently during the day.  Check with the manufacturer of your spa for details.


Test water and balance as needed.  It is best to test the water prior to each usage to verify the sanitizer levels are in the proper range.

Basic Water Chemistry Readings


7.4 – 7.6

Sanitizer -Chlorine or Bromine

1 -3 ppm

Sanitizer -Baquanide /Baquacil

30 – 50 ppm


80 – 120 ppm

Calcium Hardness

250-450 ppm


Check the scum ball (every spa should use one) and see if it needs to be cleaned or replaced.  A scum ball floats on the spa water and gathers oils, perspiration, makeup, suntan lotions, etc from the surface of the water.  Scum balls assist in slowing the clogging of filters, reduces foaming of the water and help reduce the water line buildup on the spa walls.

Clean the filter (see “How Do I Clean My Spa Filter” or “Cleaning Baquacil/BaquaSpa Filters”)

Every 3 Months:

Spas need to be drained and refilled periodically as oils, germs, and debris can build up in spa plumbing and in the water. Normally you will need to drain your spa every three months due to the TDS (total dissolved solids) level. You will want to clean the sides of the spa with a spa cleaner. You may use a sponge or a spa mitt is an excellent accessory to assist in this process. Clean the exterior of the jets to remove accumulation of hair, dirt, oils, etc. The pipes may be cleaned using a jet pipe cleaner. Doing this WILL prolong the time between changing filters and thus saving you the expense of new filters.

It is imperative that you keep the proper sanitizer levels in your water, as the water gets “older” it is harder to keep the proper sanitation levels, which is another reason for changing out the spa water periodically.

To determine how often you need to drain the water depends on usage. You can use the following formula as a “guideline” to determine how often you need to change out your spa water.


Gallons of spa ÷ 3 ÷ daily bather load = the number of days between draining

500 gallons of water in spa ÷ 3 ÷ 2 bathers per day = 83 days between draining water.

Therefore in this example you would want to drain and replace your water every three months.

Replace Spa Mineral Purifiers (if applicable) per manufacturer’s recommendations

Clean the cover periodically using a spa cover cleaner.

Refill the spa and balance the chemicals per the manufacturer’s instructions.