arizona tech
New member
i got this unit a week ago made some ro/di water and had a tds reading of 0, today i open the ff valve and di valve for a few minutes and go and make water the tds is at 70, crap,anybody have this problem before?, so i turn di and ff valves for 10 minutes and make water and get a 0 tds reading, do i have to flush the system like that every time? and what is a good ro tds reading?