I have a DIY "full spectrum" myself on my tank, I won't ever be touching MH again tbh. My main knock on MH is the heat of the fixture, skyrockets the room temp even with fans which is a problem where I live in the summer time, love the light they produce though. That and bulb cost, I don't have to buy a $50+ bulb again every X number of months. I went DIY LED because at the time a lot of these premade fixtures were very cookie cutter with limited control and color for insane prices, I think they are finally catching on now though still stupidly expensive. But my "full spectrum" LED is growing my acros very well, and I'm seeing some outstanding color come out. It has taken longer to dial in rather than stick a MH over and plug it in but once dialed in I have no complaints nor do my corals.