http://www.reefcentral.com/forums/sh...e+and+brighter
So here, 1 out of 14 tests had the DE as being brighter. Note that these are UNSHIELDED DE tests. Normally, the DE output would be even lower under regular applications (due to the glass shield). Its hard for me to believe that DE's are generally brighter when only 1 out of 14 have higher output and that 1 DE that was higher was unshielded even. When the DE's are shielded, all 14 SE bulbs are brighter.
