We found a good video on picking out LEDs, this one really keeps it simple and usable for beginners.
We like Metal Halides but they are heat generators and they suck up power in watts that add to the aquarium bill. T5’s we like for they don’t get hot and surely use less power but for us they fail to keep par output longer then a year and then occur yearly expense buying fresh new bulbs and dealing with disposal. Hence we do come and say we favor high end LED’s that are market and proven. For us it’s AI Vegas but for you it might be different. Check out this good video and see what you think. Any comments feel free to contact us here or at facebook.com/reefdvms