Quote Originally Posted by EXP13
I thought about that as well. Good point.

But on the other hand, doesn't the HPS put out more lumen per sq. ft regardless? The CFL lumens will dissapate after a foot whereas the HPS lumens will maintain its lumenousity over a greater distance...

I thought that's what was so special about them...
correct, the HPS is known to penetrate deeper, the CFLs should be kept within an inch or so, of the canopy ... but, I suspect an HPS that small, wont penetrate that well, either ... be aware, I have never seen an HPS that small, so I could just be full of shit