Dechlorination Filter

I ran across a link a while back in one of the threads about making a filter
to dechlorinate the tap water we add to our ponds. I saved the instructions
and just now am getting around to it. Can whoever posted this link tell me
if the filter removes the chlorine or justs breaks the bond between
chlorine/ammonia in chloramines? Our tap water has chlorine, not chloramine
in it. In the past I have been "spraying" water in an upward arc to airate
it as much as possible as I add water to my pond, but if this filter will
remove it, even better
TIA Gale :~)