Do you spray the orchids with this water and let it evaporate, or do you dip them in it?
Dipping I'd understand - you flush out the mineral build-up every time.
But spraying I'd be a bit surprised - however - that doesn't say anything..
I don't know any people who like orchids as much as I do and I know that I know almost nothing about the broad spectrum which one is able to keep them in..