OK, here is the maintenance question answered since that was the last thing I read about and is still in my head!
Daily maintenance: Add water to my auto top off bucket. There is a pump in there that automatically adds fresh water to the system when it gets below a certain level. Time involved: less than 5 minutes since we keep a supply of RO Water for drinking all over the house.
Weekly maintenance: Clean and scrape the glass to keep algae off of it. Hard to see through green algae. I sometimes do this twice a week. Time involved: 10 - 15 minutes a whack.
Bi-weekly maintenance: Do a 3-4 gallon water change. Time involved: Takes 10 minutes or so to pour the water, mix in the salt and start the circulation pump to mix it. The next day it takes 20-30 minutes to siphon the water out and siphon new water in. This includes disposing the old water, rinsing the equipment and putting everything away.
Periodic maintenance (the FUN and $$ part): Adding new corals and critters. Sometimes they come mounted and sometimes not. Takes a bit of time figuring out EXACTLY where you want that critter to live. Also since these guys grow and multiply I sometimes have to divide them to sell or trade for other corals and critters. Sound familiar?
Oh, I forgot one daily "maintenance" activity: Watching all the neat critters do their thing.
This takes anywhere from a few minutes to MANY minutes!
So, not too bad at all. I guess that is the minimum required. Some people manage dosing chems and other things but that is mainly the big systems and a lot of that can be automated too.