Changed filters... Now my DI is turning brown!

[BBoley24]

I just changed my sediment and 2 carbon blocks alongside my DI cannisters. 2 days later, a quarter of my DI has already turned brown! What gives???

 

[Mike J.]

Did you run a few gallons through your new filters down the drain before running it through the DI?

 

[BBoley24]

nooooooooo I didn't. Now I feel like an iiiiiiiiiiiiiiiiiiiiiiiiiiiiidiot.

 

[AZDesertRat]

What are your tap water TDS, RO only TDS and RO/DI TDS readings? Color changig resins are not worth a hill of beans, always depend on a good handheld TS meter. How oldwas the DI resin before the changes? It may have already been near exhaustion.