[joshem]

Flushing RO for the first time. I have just bought new pre-filters and have opened up the RO valve to full waste and disconnected the RO-out water pipe from the DI. It's been running for 2 hours now with absolutely no change in TDS, which has remained at 058.

Any ideas?

[dave0123]

Flush for about 3-4 hours then run your water for about 30 mins before testing