Every morning I put my finger on the glass to check the temperature. Then I shoot some live blackworms into the tank.
Every night (if I have time) I feed the tank with clams and more live worms.
I hatch brine shrimp every day for the pod eaters. I put them in their feeder every day, if I have time.
When I can't see through the top of the skimmer and I have time, I clean it.
When the front glass looks dirty, If I have time, I clean it.
If I am near the sea and I have time, and buckets, I collect some water and I change some every few months. Sometime two months sometimes four months depending on if I have time.
If the RO unit stops making water, and I have time, I change it. The one I am using now is eight years old.
When the DI resins turn color, and I have time, I change them. They only last six months or so.
If I am in a LFS and I have time and I see something I like because I have never seen one before, I buy it.
If I am out in my boat and it is low tide, and I have time, I may collect amphipods and mud for the bacteria.
Every time a powerhead stops, I remove it to see the problem. They are all 20 or 30 years old.
That's my maintenance schedule. I don't write it down because that would just be silly as it is not very structured.
I forgot, I dose driveway ice melter for calcium and baking soda for alk, a couple of times a week, if I have time
Of course if I was a Noob, I would do all the things you guys do.