It is possible to use the same water for a longer period if a filter system is installed to the tub. We also offer a cabinet for filter system which protects the system against cold on winter. It is possible to install an electric heater (3 or 6 kW) to the same circulation with the filter system in order to keep the water temperature on a certain level.
Filter system will be delivered separately in manufacturer’s package and needs to be installed according to the installation manual.
You will find the instructions here:
Installation and User Manual