Holy crap! Thank you so much.!
So where would the auto-top off sensor need to be in this design? Would it need to go in the return chamber?
The only changes that I would need to make would be to the R/O top off container, do you think I could eliminate that chamber altogether by using my reservoir in the basement (about 50 gallons) as the source of my top off water? The house is being wired so that I will be able to hook a pump in the basement reservoir to the top off sensor. I also don't really have a way to get R/O water upstairs by any other means unless I hand ball it up in buckets (not optimal), so I'm trying to think how I could modify this design to automatically fill the water change chamber via a pump in the basement. In the first design I had used the auto-top off system to do it, but maybe I could just have a second pump in the R/O reservoir that I control manually?
Also, any chance you feel like building a sweet a** sump?
