A dying question?

[shimmy]

Yes I remove all the desired amount of water I intend on replacing first before I add any new water to the system and I picked up a rubber tub last night and just looking for an old powerhead to make the water changes more affective. Yes the way I do things is lots of work but I do not have lots of room in my condo to have a fancy setup.
I stopped using tap water and started using purified bottled water (the 5 gallon jugs that you fill up at the grocery store) about a week ago and never had any problem with that water. Is that bad water to be using for my thinking was if it is purified and good enough for me to drink why not them?