I have no idea why the Dalek thought this was important, but when I topped up the water softener today, it insisted that we take the time to let a couple of the new pellets meet the “old salts.”
The Dalek Introduces The New Softener Pellets To Some Old Salts
(Apps used: Camera+, Snapseed)
Days Of The Dalek - A 2014 iPhone Project 365 
Boom Boom!