level pump switch

[longslawn]

Have a customer who due to well only able to pump around 7gpm has installed a 1000 gallon side tank. We will fill the 1000 gallon underground tank from the well then pump out of it to irrigate. Does anyone know where I can purchase a level switch to start filling the tank from the well when the level starts to drop.
Thanks for help.

[Chuck Sinclair]

If your going to use a level switch to turn the pump on LO limit you will also need one to turn the pump off HIGH Limit just like they use for boilers and such. If I was looking for that I would look for an industrial supply house.