Yes they have a system like that. Its called dialyseas. Thats the company i believe. How much water are you changing? You are putting the "clean" in it. I am referring to just removing water and putting water in. Not counting the water making,testing the salinity you have to do that either way with automation or not. All im referring to is taking water out then putting it back in. Also not talking about lugging water up your stairs. Not many people have to do that either. Its the simplest part of doing maintenance and to have extra storage tanks near the tank,more pumps and float switches all to do the easy part i see no value thats all. If you work 70 hours per week or have 5 kids all in different hobbies or are away alot i can see this may be useful for for most of us that is not the case. Plus I look at it like this ,you spend hours per week to know your kids,wife,friends,doing a water change is sort of the same thing. You get to know your system and what it needs. You do alot of observation while doing water changes i dont see how you can do that pushing a button. Sort of like having kids and having the nanny do all the work LOL