WATER HARDNESS INCREASER
What ever sanitizer
you use, the Total Hardness should be tested on first filling
your spa and thereafter at monthly intervals. As water
evaporates from the spa the minerals get left behind and become
more and more concentrated, consequently the hardness of the
water in your tub will increase over time.
Hot tub water with very low total hardness (very soft water) can cause etching to occur on the tub surfaces which will become abrasive and uncomfortable for bathers.
Rough surfaces also increase the likelihood of problems with algae growth and make cleaning more difficult.
Hardness levels should be maintained between 100 - 200mg/l (ppm)
Always adjust the Total Alkalinity and the pH before the Hardness.
More information on Water
Balancing
AquaSPArkle Hardness Plus![]()
Granular Formula. 1 kg |
SpaGuard Balance Pak 300![]()
Granular Formula. 1 kg |






