Hi Seriak,
I was intending to use water softened water for setting up the 25g and for water changes, then use store-bought RO for top up (Canadian Tire sells 5g for about $2.00).
The link you provided states definitely to NOT use water softened water for SW. Okay. So that's the answer. Not what I was hoping for, but that's the answer nontheless. Thanks
So the question we have to answer now is whether or not to buy an RO unit or give up the 25g.