How much light?

[GpsFrontier]

I use natural lighting myself, so I don't have much experience with artificial lighting. But in general I would think stronger lights would be better, though I don't know what the difference in energy consumption would be, and heat can defiantly be an issue in confined spaces. I just try to think ahead, you may want to use the light for other setups in the future. What type of system are you planing? What are you wanting to grow?