well, I am looking for one that I can use on my future tank. That one will be timers for alot of things. I am going to have timers on my pumps as well. I have a filstar packed with carbon that I only want to run about 2 hours per day, my seio 820 about four hours a day, and my mh at 8 hours a day. I am looking for some type of programmable box that has multiple timers...