This review is for the digital and analog style timers. I bought the digital one about 6 years ago and it instantly went bad. I figured it was just a fluke. Well I bought an analog style last month and it has been running for 2 weeks and it crapped out today. It will not shut my halides off at all. The center dial doesnt even work. The only way to shut it off is to press the main power button. Junk I tell ya. I researched troubleshooting on it and a lot of people have the same issue. One person posted a pic showing the back of the timer states "not for aquarium use". I havnt checked mine yet but the box shows how to use it with a wavemaker. Hmmm... trying to dodge a lawsuite????