I had the Pro fixture. I liked them until it brooke, then I had a hard time finding a ballast. After I did find one online, I got them (2 ballasts) I had them overnighted, cost like $89 to get them. I installed them and one burned out on the bench, mind you I am a contractor, so I can solder these in and used heat shrink on the connections. Then I had it on the tank and two days later the other ballast burned out. So I called who I bought them from, the ysaid, Current has a real problem with parts in this country, and they cant keep them in stock. So that should tell you something, red flag on parts. I went over to home depot and they had a compatable ballast right on the shelf, :pooh:, I could've saved a lot of money, they were only $16! Meanwhile, I have a TEK enroute because I was freaking out about the corals dyeing. Well, the Current is now in the attic for back up, and suspect I wont ever need it.