Quote:
Originally Posted by pogodzib  The WPG rule is a very basic rule that for the most part shouldn't even be used because every tank has a different shape and different types of lighting penetrate the water better than others. This is a very good post that I feel is much more accurate. |
I have a 90 gal tank 24 tall with a 8 lamp tek light over it. I am currently running only 4 lamps. I have found thru testing the par in my tank that once you reach a certain point the tank is saturated with light and adding more lamps does not raise par anymore (very little) unless you put in more lamps with lower kelvin. Moral of the story: Once you reach a certain point more lamps does not mean more light.
I am being told that 1 T5 bulb 4" off the water in a quality 9 bend reflector covers 6" of clear water to a depth of
20" effeciently and adding more bulbs covering the same area is only wasting energy. Based on what I see in my tank this is true.