AWCto shut down Shut Off

[hkgar]

I am using the Apex DOS pumps for AWC controlled by Apex (obviously). I would like to add a float valve at the bottom of the storage tank to shut down the DOS. Probably with a code line like "if switch2 ON then Off".

What float switch would you recommend? I only have the v1/v2 and v3/v4 ports available on the control module, Avast ATO is connected to the i/o port. Do I need a break out box?

Get the idea I am not at all sure how to do this.

 

[Tarawa]

I'm using one of these: http://www.reefsupplies.ca/online-store/ATO-float-switch-with-22-wire.html and speaker wire to extend the wire up to my breakout box. with code like what you stated.