I ended up with a double ATO kind of. I have a long tube running from garage main RO container to my ATO container near my tank that is run by a versa pump and activated by a hydros sensor in my ATO container. I then have a traditional tunze sensor in my tank that runs a normal ATO pump. Since I run a kalk stirrer it does not turn on often. With this system I never even think about my ATO other then filling my large main RO container once a month or so. It has worked out great. Using a similar method you could use a somewhat small ATO container (which could be any container) in the laundry room as your ATO container and have it auto filled. Minimizing work is key in this hobby.