something is not set up right IMO
, Mine runs around 200-250 and I get it to 0 on the ro
and I am even getting a 3 out of the membrane right now.
My buddy has a 700 for tap and he even gets it down to 0 on the TDS
. I would look to make sure its hooked up right and it is possible the membrane is not working right. I have heard of bad membranes before. passing through a working membrand should get it down to atleast a 30-40 if working right.. JMO..
Have you tried the TDS
meter with distilled water to make sure the meter is working right? It may need to be calibrated..
unit is it??