I’m retired, but on weekends, actually on Sundays I make my RO/DI water which actually isn’t much much work, but since I live in a 2Nd Flet condo that does entail me dragging the brute can from the den to the kitchen and then filling up with 15 gallons, dragging over by the tank. I also keep on hand ten gals of fresh water at all times. And I emoty that into the brute can first and I then fill those up as well.
i will also do minor work such as cleaning the glass and just puttering around.
i don’t have a big tank so I just putz. I also do my water tests on Sunday during the winter. Summer is a different story