Ok I have spent countless hours researching LED's and came up with nothing. Watts per gallon means nothing from what I have been reading, the LED's I am looking at buying have a LM of 65. I have a 75 Gallon 12dx60wx22t with SPS and LPS corals plan on adding a clam, where do I even start on what is needed to be certain these corals will survive. Any advice is needed.................