Thanks guys, but fluoride was my concern because of the statement that it
was possibly toxic to Disas. I don't have a problem with chlorine because as
you say it evaporates very quickly - even straight out of the tap.

Cheers

John



"Andrew" wrote in message
oups.com...
Chloramine is not used in the Melbourne water supply (OP is from
Melbourne). In John's case, letting the water stand O/N is an
appropriate method of removing chlorine.

Eric Hunt wrote:
Letting water stand overnight to evaporate the chlorine only works with
water that's been sanitized using chlorine gas.

Many water systems are coverting to a more stable form of chlorine,
chloramine. It never evaporates. Google it - there's lots written about
it,
both pro and con.

San Francisco converted a year or so ago. I don't grow water-quality
sensitive plants, and the plants I do grow haven't complained.

-Eric in SF
www.orchidphotos.org