Blue Whale Spa Ltd, 11 Glaisdale Drive East
Nottingham, NG8 4GU
-6-
Total Alkalinity
This is the measure of the ability of water to resist changes in Ph. Total Alkalinity increaser is added once
the Chlorine content and the Ph level are correct.
Testing Strips
Testing strips have coloured pads which change colour dependent on the amount of the above
chemicals dissolved into your water.
Dip the testing strip in your water and compare the colour of the pads on the strip to the
coloured squares on the testing strip container.
If the coloured pad is the same as the square patch on the container you do not need to add any
chemicals.
If the coloured pads are different to the squares on the container add small amounts of chemicals to the
water re-testing each time until the coloured pads match the squares on the container.
Oxidiser (Shock)
This should be used as directed on the package once a week or after the spa has been used for several
hours by a larger than normal number of people.
These chemicals could be the only things you need to put into your water to keep it clean. There are
however various other things that affect the quality of your water as the tub is used. All of these chemicals
should be used sparingly in small amounts, retesting after each addition of chemicals.
