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Knowledge centre
Practical answers about pool and spa water chemistry, smart monitoring and hydrodynamic cavitation – written for professionals and their customers.
What is ORP in a swimming pool?
ORP (oxidation-reduction potential) is a measurement in millivolts (mV) that shows how actively pool water is being sanitised. A higher ORP means the sanitiser is working harder against…
Read the article Water chemistryWhat pH should pool water have?
Most swimming pools and hot tubs should be kept at a pH of about 7.2 to 7.6. In this range chlorine works well, the water feels comfortable on…
Read the article Smart monitoringInline vs floating pool monitors: what is the difference?
A floating pool monitor sits in the water and has to be taken out, charged and cleaned. An inline monitor is installed permanently in the circulation pipework and…
Read the article Water treatmentWhat is hydrodynamic cavitation?
Hydrodynamic cavitation is a physical process in flowing water. When water is forced through a narrow passage, its pressure drops and tiny vapour bubbles form. When the pressure…
Read the article Professional pool managementSmart monitoring for pool maintenance companies
Remote water monitoring lets a pool maintenance company see the pH, ORP and temperature of every customer pool on one screen. Instead of finding problems at the next…
Read the article Hot tub water careSmart water monitoring for hot tubs and swim spas
Hot tub and swim spa water changes much faster than pool water: the volume is small, the temperature is high and several people may use it at once.…
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