Yes, more power, that's what it takes to run anything. From what I've been able to take from my resurch, and now that I've built one, the thinking I've come across is about 1/4, to 1/3 power for LED's to other types of normal lighting. If your happy with a 100 watt light of whatever type, then you can buy something in the 30/40 watt range. If you are trying to replace 1000 watts, like I am, then you should have a 300/400 watt LED setup. Now if you have that much power in LEDs, you should see real results.
To all those that think they can set up a set of power LEDs like I have I'd like to say a little about it. I built my power supply as a high voltage DC supply, and am running my LED's in three lines of 1 amp each. I will be adding at least one more line, or three lines of one watt units for the lesser colors, like deep red. The one thing to be carefull of is thermal run away. That's what happens when the power LED's get warmed up, they start to let more current go through. The warmer they get, the more current. My high voltage power supply also has a constant current regulator built in to keep it at the current I want to run. This way I don't need a lot of big power resistors to regulate the current. I am not now, or in the future going to tell people how to build such a power supply, there's just too big a chance somebody will burn down there house, or kill themselves. You can find everything you need to know to build a power supply in books.
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