On the 125 I have mostly a fowler tank but a few corals have made there way into the tank, strange I know. I was running a 2 250 watt radium mogul based bulbs in large 400 watt hamilton reflectors on top of the canopy and the bulbs were only a month old when I got them from a friend. The look was out of place so my wife scored a 3 x150 watt current fixture with no bulbs. We just wanted some light in the tank so I bought some 12 dollar 20k bulbs online and almost 2 months later I'm amazed at the color and growth. My monti is really red and my ricordia rock is exploding. Now, I'm not gonna ditch my radiums on the reef tank but I had to report on how well such a cheap bulb is doing at the moment. I know tons of research goes into making these bulbs and i stress to never go cheap on lighting for a reef tank but this isnt the reef tank and I am impressed so far at the results I've achieved. We shall see what it looks like in the coming months. Also, no algae has grown which was something I was worried about.