Get the 42 watt, but make sure you get the FULL spectrum one. It is also called the Seasonal Affective Disorder bulbs. This is very important. How tall are you going to grow your plants? 3-4 should probably be okay. They are pretty damn bright for compact flouros I was really shocked when I turned them on.
sawleaf Reviewed by sawleaf on . Ozone CF bulbs Just want to let everyone in on these awesome bulbs I got in a few days ago! If you are growing with CF you must check these out! They are the best CF bulbs I have ever come across. At first I though they were too good to be true, but I went ahead and bought four just to try them. BUY THESE!!!! They are compact flourecent bulbs coated with titanium dioxide and not only are they bright as hell(around 3500 lumens for a 42watt bulb) but they destroy odor, bacteria, and mold like and Rating: 5