auto aqua

My XP Aqua ATO has worked great for the last 5 months or so, then at midnight the last two nights it goes off because water has reached the high limit sensor. I unplug it then plug it back in in the morning. Has anyone had similar issues or know what is going on?

I have a new build, a Waterbox 130.4. From the beginning I planned on setting up auto water change, running a line through the wall to a holding tank in my laundry room. I’m at the point now where it’s ready to set up.. but I’m having doubts whether it’s even worth it. I have sand, and one of...