Little late but I do use tap water@Homerjfries Figured I'd just tag you here so anyone interested can see it. The filter and set up is called RO Buddie, and is available in quite a few places (inc Amazon) and has different models. Price seems reasonable, and iirc from posts that the filters last a good while.
was gonna hook a filter up to the hose never did it,
I Live in the boroughs 7.5 PH out the faucet but , try to let it sit 24 hrs if I can for the most part
to rid the chlorine, I use SoHum Organic water only living soil as a medium Suppose to keep the PH in check,
and make life easy for a noob seems to be working so far , don't know if its keeping my yield down outdoors learning right now.
getting ready to start my first indoor tent grow with the same living soil in SIP buckets gonna run 7.5 tap water again, see what happens !