tds meter

[o.c.d.]

First check if the Tds meter is calibrated properly buy using bottled distilled water that should read zero. The you should change your carbon and sediment filters (every 6 months depending on usage and tds reading), Run for 30 min or so then test again. If it is still not down the check DI, many di media change color to a orange when they are exausted. If you do not change the filters regularly your membrane filter will not last as long. That one is the expensive one to replace.