Anyone use aquarium water for orchids?

[Manu]

The internet seems to think otherwise and everyhing I've read states that it does breakdown and evaporate after some time, it just seems hard to find an exact figure as to how long it takes...

I personally used to use RO water, but have been back on tap water for the past year with no adverse effects. Plants are all striving. I still use RO for my 2 Dracula's as they are very sensitive and like pure water. All others get tap water that I let sit in open jugs of water for a few days.

I guess maybe for aquariums this is really important, but I don't see this being an issue with most orchids.