Thanks valve man. I did not mention, everything is outside and the 525 tank gravity feeds my drip irrigation system. The tank and well are located on a 50 foot hill above the drip irrigation system. So I do not need a pump to get the water out. I have seen float switches that have a brass rod and the float moves up and down, giving me a turn off and turn on signal to the pump. I would really like to use that if it is better than just a off float switch. Do you have any suggestions for relays (what kind, brand, etc). I am worried that if I were not there, and the float got stuck the pump would run continuous. Any ideas about that minimizing that scenario? One other issue too, in the winter I would need to drain the pipe above ground to the tank. Any ideas on how to do that?
thanks