Here is a pic below, I got a Drinking water kit with it that has a tank/faucet and an in line TDS meter. I'm assuming #1 goes to the tank? But then I only have one other hose going to the faucet right which I guess is #2, but what hooks up to the #3 T connector spot? The directions are pretty much useless. And where does the inline TDS go, there are 2 T's on it, one labeled in and other other labeled out.