Took my old 180 reef down and put up a new 175 bowfront reef. This is all my old equipment from it and a 55gal that I started on. The lights were on a 40gal long refugium, grew macroalgaes very well, I took the fuge down for lack of room, and I have an automated water changing system now where water changes take me 5 minutes, so I have no nutrient buildup so I am running without a refugium now. The lights are like new, with appx. 10-12months on the bulb.