Planted Tank Guru
Join Date: Jan 2010
Location: Contra Costa CA
Chlorine (bleach, or in the water) evaporates, leaves the water and enters the air.
If you have been bleaching something (equipment, tank, rocks...) , I would rinse it, then air dry it. If you still smell bleach you could then rinse again with a dose of dechlor in the water.
Prime is one of the least expensive. Chloramine Buster usually prices out about the same.
Safe will probably come out a bit cheaper.
Swimming pool supplier will probably have sodium thiosulfate granules. (works for chlorine, bleach).
To treat tap water that has chlorine, all you need to do is run it into a bucket and add a bubbler or pump that will circulate it so the chlorine will have a chance to out gas. Usually overnight is enough, 24 hours is sure to be safe. This will not work with chloramine.