Wow. I think I'd pass on that price.
I think that anything outside of tap water is good. RODI
is ideal. I've had my new tank up for a few months now and have been getting water from the Glacier dispenser outside a local store. I believe it is carbon filtered, RO
and the carbon again. They have a screen that shows when it was serviced last, so I try to get my water close to that date. I've had minimal problems with algae so far. A little on the side that catches a little sunlight at times, but its not a problem. For $1.25 for 5 gallons, can't go wrong.