hey marty
what location are you getting your r/o from?
i use to get mine @ king george hwy n 67
tds-0
phosphate-0
they sell some ro units there too or better yet get one from these guys
got a 100gpd unit from them and a box of filters to go along with it for 221. shipped
after they recieved my payments took them 1 day to ship it
http://www.stores.ebay.com/id=70548722[url]