I am trying to help my MIL with her pool, and noticed yesterday that her salt cell is suddenly leaking at the union (I'm not sure if that is what it is called....it is the spot where is screws on). I tried putting some lube on the o-ring and then we tried some plumbers tape, but it is still leaking (and when I say leaking, it is basically spraying due to pressure, not just drips). I thought to try and replace the o-ring next, but I'm not sure if that is the way to go. Any advice would be greatly appreciated.