@Steven Simon is on my apex. I think that is the coolest thing.
some good ideas here. i've had 2 extended vacation disaster, both on a 10 gallon, so i am very interested in this topic. and currently without a reefer or even aquarist buddy to help when i'm away.
one idea that has crossed my mind and i may try when i go away this summer is to make a short video that would walk them through the various tasks they might need to do. turn off pumps to feed, turn back on. swap out an ato resevoir, etc.