I'm not here to debate, but rather enjoy a healthy discussion about this hobby. I think passions get the best of us sometimes and it comes out in a not so friendly way. I really encourage people to take a step back and think before you type. We are adults here and need to help each other and also learn from each other, which is the point of having forums like R2R.
The fact is, we have come so far in this hobby, but there are some things that haven't changed or haven't truly advanced in the way they should have and lighting is one of them.
I absolutely love led's, but I agree with Alex here, they don't compare to the gold standard, yet. I really want them to, they're getting closer, but they're not there. Until that day comes, the gold standard is and will always be metal halides with T5's. I think MH with led's are next up (and my next choice in lighting), but that's my personal preference and it's based on nearly 40 years in this hobby.
I'm not saying MH need to be over softie tanks, but if you're keeping sps, there's no substitute at this time.
I'll also add, the ad from Hamilton is spot on. Here's some reality for you.
Take my tank for example. It's a shallow 90g 36x36x16 and I'm currently using 9 fixtures, yes, NINE. And I'm still getting shadowing in spots. That's 645 watts of electricity for 8hrs and probably 2/3 of that for the remaining 4hrs. That's not efficiency, that's a lot of wasted energy. I can put two 250w fixtures over my tank for 4 to 6hrs and run some led's for dusk / dawn the remaining time and get better results. So how are led's better than halides in this situation? I can see the argument for led's in mixed and softie tanks where growth isn't a concern and you want to show off the blue lights, but for sps, no, they simply can't compete with halides yet. I don't have a dog or horse in this race, but I'm not trying to put the cart before the horse either. Here's my best analogy, comparing led's to halides, it's the same as comparing mp3's to 2" tape thru a console. Kids these days have no reference to true analog music and it's the same with reef lighting. If you have no reference, then how can you compare?
Just something to think about. Remember, be kind and don’t be afraid to listen and learn, as we can all learn from each other at every stage of our lives. To give up on learning, is to give up on life. Or just sit back and have a tasty beverage and enjoy the show.