just got my own ro/di unit in today. plugged it in after work today and started to make water, got a maxcap 90gpd, so far so good but i dont know if it is reading right, what does the tds read coming in from the supply mine is at 438ish
thanks, today i started to fill a drum i have and found out that its higher during the day is that right? at about noon it was at 538 and at 10ish it went to about 515. is that what usally happens, new toy, just excited i guess.
no, usually the opposite, higher at night than day.
make sure you measure after it has been running for awhile.