[water fed bill]

Im having trouble keeping my water at 000, I have a merling RO unit and a 4.6l DI unit ive changed the prefilter and both membranes and it is going into the DI unit around 020 and coming out at 000 for a few days then its creeping up to 003 and so on til it reaches around 010 after about 9/10 days and I swap the resin its all brand new resin and I cant figure out whys its doing it, it used to last weeks before changing the resin.
Thanks

[SeanK]

There's been a few posts on people receiving bad resin lately so maybe that's your problem.
The only other thing I can think of is maybe your getting some higher tds tap water into your resin while flushing
the R.O.

[Clever Forum Name]

Need to know how much water you are using. Could be ok for a 1000L A day. Disaster for 50L A day.