Auto auto top off

[snowmansnow]

Hey guys I’m looking for a great method of keeping my ato topped off through my rodi. Anyone accomplish this successfully?
B


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[Steve Burton]

I just put a float valve on both of my ATO reservoirs (5 gallon buckets), they stayed topped off all the time for about a year. I recently added a solenoid valve on a timer so the 75 gpd RODI only runs two hours a day (to be able to make @6 gallons, more than enough to fill both) to top them up.