Jinx wrote:

>Bob, three gold-plated wires would do as a simple SPST switch. If
>#2 is 1" longer than #1 and #3 is 1" longer than #2 you have a switch
>with #2 as the common. The end of #1 is at the high water mark. If
>level falls below #2, then #2 and #3 are not shorted and the pump
>turns on. When water shorts #1 to #2 it turns off
>
>You could make them very fine, even colour them the same as the
>fountain so they'd not be too obvious
>
>  
>
Jinx, that looks pretty good! Use AC, i.e. 12VAC, so the wires won't be 
eaten away?
and the currents would be small...and it just means only 3 wires to bury.

I like it.

--Bob

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