[QUOTE=ReeferRob;47966]Thanks Stun, and everyone else.

Ive got it all hooked up, ran through a few gallons then started filling the 55 gallon barrel I have. I also filled the grow out tank, but not yet the fug. The darn pump and skimmer didn't come as promised? The TDS before is between 120 to 125 after, 0.
QUOTE]

You want to check and monitor tds in 3 locations:
Tap water: you said 120
RO water: ??
DI water: you said 0

Russ