What does stone in the kettle mean in practice?
The rate of sediment growth depends mainly on carbonate hardness, temperature and amount of boiled water.
When does it matter?
The scale takes longer to heat up, increases energy consumption and may leach into the prepared drinks.
Which solutions are related to it?
The kettle should be descaled periodically, and if the problem reoccurs, measure the hardness and select softening or RO filtration.