Ro/Di Solution?

[Hong Kongan]

Hi all

I have another question I ve been reading a lot lately and many people have recommended reverse ozmosis and deonization for my tank. Because I live in Hong Kong these are really expensive. I was just emptying out my dehumidifyers
when an idea struck. Could I use this as my water im pretty sure its pure and no phosphates, silicates and the like. Any output would be appreciated.

Hong Kongan

[rglover]

That water may have copper from the lines in your machine. You caould use acctivated carbon.