1. Mag Float Cleaner - It was a PIA to clean the glass with a scraper with a "Sponge" tip. That one little piece of equipment saves me a lot of time and aggravation

2. Timers/Controllers - Without those I used to forget to turn on my lights, or run them too long, etc. It's so nice to set it and forget it. I do love my controller, you would have to pry it from my fingers.

3. MJ 1200 pumps - Those little pumps can do absolutely anything. From keeping my change water circulating, to pumping the water into the tank, running a skimmer in a pinch, replacing a powerhead in a pinch. Those little pumps are awesome, everyone should have at least one.

Honorable Mention - Separate freezer for my fish food, it saved me from hearing from my wife every day how bad my fish stuff is stinking up her food. It also gets my beer nice and cold while doing a water change.