Quote Originally Posted by JaySin
I bought some 40 watt (150 watt equiv.) CFLs the other day thinking they would be better then the 23 watt (100watt equiv.). I decided to look into it more and found out they only have 2000lumens when I could use two 23 watt bulbs to get 3200lumens.

I'm guessing I should probably return my four 40 watt CFLs for eight 23 watt CFLs. That way I could put 4 bulbs on one socket instead of just two and still be under the 100w rating while getting way more lumens.
Yeah i actually prefer the 23 watts because i do cab grows, and the smaller the light with the more lumens = best. 40 watt is pushing on size considerations in my cab... go with the 23s they work great