The proper sanitiser residual for your spa depends on what sanitiser type you are using and sometimes whether the spa is commercial or residential. Use the following guidelines for ideal levels for your spa.
Chlorinated Concentrate:
Ideal range 2.0 – 4.0 ppm free chlorine residual.
When first starting a spa with Chlorinated Concentrate, test the free chlorine residual frequently to determine how often you will need to apply product. Add 15 grams of Chlorinated Concentrate per 1,000 litres at a time with the pump running. Circulate 2 hours, then retest the free chlorine residual. Adjust as needed.
Brominating Tablets:
Ideal range 4.0 – 6.0 ppm total bromine residual.
When starting with a fresh fill, fill up the feeder or floater with Brominating Tablets according to manufacturer’s instructions. Shock the spa using Chlorinated Concentrate or Brominating Concentrate according to label instructions to eliminate undesirable compounds and establish a sanitiser residual. Adjust the feed or flow rate for the Brominating Tablets and test frequently for the first week. Shock as needed until the proper bromine residual can be established and maintained for several days.
Brominating Concentrate:
Ideal range 4.0 – 6.0 ppm total bromine residual.
When starting with a fresh fill, add 25 grams of Brominating Concentrate per 1,000 litres with the pump running. Test frequently the first week and add Brominating Concentrate as needed to establish and maintain 4.0 – 6.0 ppm total bromine residual.
