Sorry I forgot to update this. The 2nd DI resin chamber worked pretty well for about 2 months. Now the resin needs to be replaced on both DI chambers.

Dakar.... you have well water so it would probably last you a lot longer. My water supply is terrible out of the tap. Higher nitrates and TDS than most places.

As of right now (since the resin is shot here too) My tds is about 10 in the waste water, so I'm not using it for the tank. It is being used in the washing machine. I just use a small powerhead attached to a python hose to pump the water into the washer. Lucky for me that my washer holds about 30 gallons in the fill cycle, lol.

1container waste water = 1 load of laundry.