“The biofilm serves as a 'refuge and sanctuary' and protects the bacteria from the disinfectant. SpaBalancer UltraShock is the only disinfecting product that penetrates the biofilm and destroys the polysaccharides (complex sugars) contained therein.”

• After initially filling the Whirlpool.
• If the water is not crystal clear.
• If the water smells unpleasant.
• f you have greasy deposits on the walls of the whirlpool.
• If the water was heavily polluted by a “whirlpool party”.
• Periodically, when using disinfectants such as chlorine, bromine, active oxygen, etc.

It is also possible to disinfect the spa with SpaBalancer UltraShock only. This is recommended, for example, for wooden hot tubs without a filter system.

Add 50 ml of SpaBalancer UltraShock for every 1000 liters of water. Keep  the pump running with the addition of SpaBalancer UltraShock to ensure  better mixing. It is important that UltraShock can work for at least 8 hours. (If it works for less than 8 hours, there may still be bacteria and dirt in the whirlpool). 

You can control the concentration of the UltraShock with the SpaBalancer Test Stripes. After 8 hours the test strips should still show at least 0.3 - 0.5 ppm concentration. If there is no more UltraShock in the water before the 8 hours have elapsed, repeat the shock treatment. 

Important: These values refer to 37 degrees Celsius warm water. With colder water, UltraShock degrades slower.

If UltraShock still degrades too quickly after the second use, this may indicate heavy soiling with a lot of biofilm in the pipes. Carry out an UltraShock Intensive cleaning. The instructions can be found on our website. 

If this also does not help, you will have to carry out an intensive cleaning. You can also find all information about it on our website.