Glad to hear that it's working.
You still want to drain it every so often, depending on the type and hardness of your water.
Back before we got Lake Michigan water, I used to drain mine about 3 months, and the water would run red, lots of Iron in the well water around here. We used to use Muratic Acid to clean the toilets because of the rust in the bowl and all the dishes and glasses had a red tinge to them.