I was wondering if anyone kept journals of their tanks. I write stuff down and take pictures and videos and use an online app called Trello to track what I've done and the history of my tank. I use Trello for other things too. It's really good to track work and to-do's. I find it pretty handy for keeping track of all I've done, want to do, etc. for my tank and it's a free online resource too.
Here's a pic as an example.
Here's a pic as an example.