Hi everyone, I read this elsewhere on the net: Example: Take a 10 gallon tank, by the math you could put 2 - 18 watt Normal Output Flourescent bulbs over it and have 3 + WPG "mathematically" but you still only have 18 watts of "intensity. You will not be able to grow many varieties of plants successfully in this tank even though you are at the 3 WPG that we are looking for. Now if you take that same 10 gallon tank and put a 1 X 36 watt Compact flourescent over it you now have the same amount of watts total but you have 36 watts of "Bulb Intensity" in which you can grow virtually any plants you choose. What does that mean? Can anyone explain to me in layman's terms what this guy is saying?