I've always loved MH for aquariums. They're the only way to get the scintillation on the gravel. But they're pigs. They put out a shit-ton of heat. they're fragile. They're short-lived. And they're definitely not sitting on Gemini track. The pink/blue thing is a problem too because none of the grow lights have any kind of throw. They expect you to be growing tomatoes with a light hanging horizontally six inches from above. And nobody who does grow lights expects you to do any flagging - it's gonna be hella bright, it's gonna have a 360 degree pattern, and there will be zero facility to control the spread. Believe it or not, I threw a PAR meter on the thing. With 14 hours of on-time the wall gets more than 2 and less than 50 PAR. I actually did just fine with some exemplar plants over a year ago: The nice thing about having it on the wall 4' up is I can hit it obliquely and never hit anyone in the eyes.