New lighting - new technology????

[StirCrazy]

the totaly lumen value might be just as good but the intensite woulden't.. so IMO it totaly depends on how deep you are trying to punch that light into the water.. thats why MH are so good. being a point sorce light they penatrate a lot deeper than the equivalent powered PC.

with my light meter at the bottom of my tank (24" distance between the meter and the lights) I get a reading of 5375 lumen +/- 3% from two 96 watt PC and 3 NO actinic bulbs (but this is anywhere on the bottom of my tank not just in a couple spots). I am going to take another reading with a water proof meter when I fill up the tank so I can see how much I lose due to the water ( has anyone done this and worked out a percentage loss per distance in water?)

Steve