Lonnie came across your video from 6 years ago on how to replace the resin in your water softener. You showed how much came out but it was way less then the 1 cu. ft. you put back in. Question any idea where it went?
It all came through the regen tube over the years during regen cycles because I always seen what looked like sand in the sink. Some people have said it comes through the water lines into the sink and bathroom.
