20 -30 minutes a day + weekly maintenance of about 1 - 2 hours on a weekend. This is for a 180 and 72 (shared sump). Daily includes checking temp and ph (probes too), and inhabitants of health, cleaning front glass every other day, mixing kalk water for top off and putting into Kent Aquadoser since there is not auto top off (4 gallons per day evaporation), feeding the fish (and watching them eat). Every 3rd day or so, this includes shutting down the circulation and spot feeding various corals. Filter socks get changed about every 3 days.
Weekly/Bi-weekly includes washing dirty filter socks, cleaning skimmer and aquadoser, cleaning powerheads as needed, changing carbon in reactor if needed, cleaning of lighting fans, mixing new salt water (60 gallon change every 2 weeks, more if needed).