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Thread: switch for two tank pumps control

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    DIY Junior Member GeneMN's Avatar
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    Sep 2012
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    Minnesota
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    Default switch for two tank pumps control

    I have a small greenhouse with a two tank cistern--graywater and rainwater with a pump in each tank--and need to switch automatically from the graywater pump when it is nearly empty to the rainwater pump. All I've been able to find are on/off switches; what I need is the equivalent of a three way electrical switch from one circuit to another.

    Does such an animal exist? Any help appreciated.

    If a moderator is here, will I be emailed if someone replies? Or do I have to keep checking? Thanks.
    Last edited by GeneMN; 09-02-2012 at 09:32 AM.

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