[Myka]

Does your tank have trim on the top with a black plastic strip running across the middle of the tank? If so, one halide will make a big shadow where that strip is. If no strip, then one halide would be fine. I would either go with 2x150w or 1x250w. I think 2x250w would be too much heat to deal with on only 67 gallons. I have 2x250 over a 24" deep 90 gallon tank and there are few LPS that can handle the output...they are all off to the side in shady areas. Many of my SPS get bleached out if they are in the brightest areas too. A person doesn't have to light the crap out of the tank to get nice colors out of SPS. Water quality is more important.