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#11
07-16-2015, 12:40 PM
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In my old setup I had a double setup. Basically, the first sensor is for control to start and stop the auto top off. That one is fed through another auto top off which is just a secondary shut off. Both systems have to be satisfied to feed water. If the first one fails, the backup will de-energize the auto topoff pump.
I did this after flooding my tank and the salinity dropped to 1.010! 
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