dishwasher salt

[chakka35]

Is there anything special about dishwasher salt or is just everyday sodium chloride? Could I use bulk-bought cooking salt?

[alan30]

Table, cooking, rock and sea salts may contain additives that can actually increase water hardness. Also, the fine consistency of some of these salts mean they are likely to clog when wet

[chakka35]

Thank you, alan30

[Gef]

It is pure sodium chloride but I think that the size of the crystals is important.

Have a look at

http://www.saltinfo.com/water%20softening.htm

By the way alan's answer is just ripped from a website which you will find by doing a google search. At least I have provided a link.

[chakka35]

Thank you, Gef. All is explained.