Chlorinators can be controlled in 1 of 2 ways. It can be connected to the well pressure switch. Anytime the well pumps come on, the chlorinator will also come on. It can be connected to a flow switch so when water is used in the home, the chlorinator will come on. A Stenner is a peristaltic that has rollers that pinch a rubber tubing to inject chlorine into the water stream. You should get a chlorine test kit and test the water after the injection point but before any filtration equipment to insure you have the right amount of chlorine (1 ppm is good whereas 5 ppm is too much). I do not recommend tablets even though they will work.