Step 6: All done!
In addition, we never have to touch the light manually now. This gives us the assurance that the fish are setting their rhythms based on a regular light cycle, rather than the 'whenever we remember' phases, hopefully lengthening their lives. It also means we can go on vacation without having to worry about the fish light. Plenty of positives.
1) One thing I considered was adding a 'feeding light' to the outside of the light hood. This would light up when it was feeding time, and allow us to dismiss the light for that night with a button press. Since everyone in the family feeds the fish, it would keep us from feeding them too much.
2) I also considered adding an auto feeder into the mix. If I do that, I'll post a second instructable with the steps needed.
Though I've been a member since 2006, this is my first instructable so far. I hope to post many more as time goes on. Please give me feedback on things I didn't cover enough, as I'm always looking to improve!