Water change question?

[santos]

When doing a water change I use a tap water conditioner.
Do I have to let the water sit for a bit or does the conditioner work instantaneously?

 

[Leslie]

Instantaneously

 

[Griz]

Yup

 

[santos]

Hhhmmmm
Now I know
Thanks Griz & Leslie

 

[Sorrell]

Some people prefer to age their water for a period of time before adding it to the tank. Personally, I add my treatment products to my bucket, fill, and use