
Using the scales identify your readings.
We recommend always aiming for 7.2 on the pH scale, as this is
the point at which chlorine is most eective.
If the pH of your spa water is above 7.6, then
use RotoSpa pH minus to reduce it, using the
instructions on the container.
We advise that you should aim for the higher end of the recommended range (5.0 ppm of
chlorine, 6.0 ppm of bromine). This will act as a useful buer for uctuating conditions, such
as high bather loads and hot weather.
If the pH is below 7.2, then use Rotospa pH plus
to increase it, again adhering to the instructions.
Also be aware that continued use of the hydro jets
where the air control(s) are turned on, will cause
the pH to naturally rise, so always ensure these
are turned o when you are not using the spa.
TEST IDEAL READING COLOUR GUIDE
Free Chlorine 3.0 - 5.0ppm*
Bromine 4.0 - 6.0 ppm*
pH 7.2 - 7.6
Total Alkalinity Your RotoSpa Installation engineer will test your main water’s alkalinity and advise you
on the best chemical treatment. The perfect total Alkalinity is in between 80 - 150 ppm.
*ppm = parts per million
STEP 7 WATER TESTING
0121 354 3428 |www.rotospa.co.uk/help-centre/
35 Boldmere Road, Sutton Coldeld, Birmingham B73 5UY
UK’S ONLY SPA MANUFACTURER
Please call the team if you have any questions or visit our help centre.
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