The pressure on the pressure gauge is dropping and the water is coming out slower. What needs to be changed? Also, I only have had it running for 2 months or so.
It seems like I just went through tha same problem about a month ago, I also had my Ro/Di running about 2 months anyway..I changed the sediment filter ,it was a slimey dark brown and that seems to have cleared things up instantly! Hope this helps....