"Amber Ormerod" wrote in message
...

"kenty ;-)" wrote in message
s.com...
Hi, I have a greenhouse for growing orchids & having a source of rain
water
inside the greenhouse that is of inside temp is important,especially in
winter when tap water is really cold & rainwater is a natural source
for
plants.


is that any different than bringing it inside the greenhouse for a few
hours
to get to the same temp?

Not really. Just more convenient. Even tap water would soon lose any
chlorine etc.
Most summers the rainwater gets finished anyway and has to be replaced from
the tap.
Brian