This statement has confused me. I had thought that when I run the 1/4" poly pipe down beside the well piping and wiring, I would leave the end that is next to the pump intake open. How else will I measure the actual pressure the column of water is exerting ........................ or have I misinterpreted your statement?
Also, what is the best method for connecting the loose end at the pump. I had thought of using a cable tie, but that will probably crimp the tubing somewhat. Will that be an issue? Does the tubing need to be fastened so that the end is not crimped in any way?