Several factors need to be taken into consideration.
The thickness, hardness and type of scale.
The length of the scaled area from the ECOSOFT.
The volume of water flowing through the system
In many instances the thickness of scale in the water carrying system has taken a number of weeks, months or years to build up. Once installed ECOSOFT will begin to work immediately. It may take equally as long or longer to remove the existing scale as it took for the scale to build up.