Interesting question, I wonder if a delay would work. Switch activates solenoid for X minutes then off and ATO pump kicks on after X delay. Or one may have to use timers so you can specify the time on for the solenoid. The barrel tender from Avast is nice but pricey, so I have a butterfly valve inline to 30 gallons of fresh water and refill it every couple weeks. Of course, one day Murphy and I will be drinking a beer and I'll forget to refill it and that's no good, I've been looking to automate this myself.
Perry
A screen shot is worth a thousand words...
Profilux 3.1N eX, 3 PAB 6D, Slave Doser, PLM-ADIN, Vortech Controller, PLM-PWC, Leak detector, 2 LX 6100HV Mitras
Controlling a 150 DSA Peninsula mixed reef.
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