Oh, and to your original post, there is no bible, and while we're seeing some very good results with it, it is very much still being explored, almost at an early stage. There is a lot of information on efficacy, but it's something about the projection or quality of light that we haven't yet captured or understood well enough with LEDs to make a solid consistent solution for. I've talked to some substantial reefers in the NYC about it, and followed a LOT of threads on it (the debate is never ending), but generally it's still in it's infancy, and if you want plug and play, stick with MH or T5.
LEDs can be great, but there is a learning curve, and it's not intuitive, easy, or well-defined by others (or even the market). We're still seeing less underside growth on SPS and some other artifacts of the beam of light being much narrower than expected (even without lenses entirely), and with all of the LED pucks out there it adds even more confusion to how to appropriately spread light to get even growth and coloration. It's a tough mix because if you do a puck the colors blend nicely, but then you get a shaft of light and the light definitely doesn't bounce and reflect all over the place like MH did, but if you go with wider fixtures, you run into "disco ball" effect where a hole in the rock that only one LED reaches into will shine a red or green spotlight further down into the tank which apparently some people get very distracted by (?seriously?!).
I hope you get some good answers and not just another long MH vs. LED thread (which are ALL OVER this forum).
