This I built to run my entire 120 gallon saltwater aquarium. It timed my 6 ballasts from Metal Halides to High Output Fluorescence. It has double switches... electronic switches... timers... You name it... it's got it. I worked really hard on this thing and it ran for about 6 months when I sold the tank. I have well over 40 hours of work put into it. There must be at least 300 dollars worth of parts in it.


