Quote:
Originally Posted by BlueTang<3
If it is starting to rise then the di resin is becoming exhausted. The ro membrane should be good for a few years. I like to use the colour changing di resin so i know when it goes from blue to brown it is starting to become exhausted.
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Really? I just changed all of them in the begining of Jan. My DI resin in the cartridge is kind of brown in color and only 1/4 of it has changed color to a darker brown. Thats chitty if i'm only gettting 7 months out of it at 50-60G a week.