I have a separate log for each of my three tanks. I log all maintenance (routines and otherwise), equipment changes, water tests, fauna/flora changes, breeding events, interesting behaviors, problems, and basically anything of note. I typically make 5-10 entries a week, depending on what is going on.
I also make logs like this for both my Windows
PC and my several Macintoshes, noting software installations, OS updates, problems (and solutions), etc..
On many occasions, I've found these logs to be extremely helpful (especially in tracking down an otherwise elusive problem). And with just a little dedication, they are very quick and easy to maintain.
I use the Mac OS X program "
StickyBrain" for all of my logs, note taking, and general organization.
I
am a compulsively organized person, though.
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