​The REALice System is based on Watreco’s patented Vortex Process Technology (VPT). The REALice System is economical, ecological and environmental friendly as it uses no chemicals, filters, membranes or additional energy sources. By using REALice-treated water for resurfacing, you will be able to use water as cold as 10°C or even colder. That will let you raise the temperature of the ice surface by between 1-2 °C — a tremendous energy saving.