Also, your light is 3000k (Warm white) try to get ~3-5 more lights and get half warm white and half Bright White (6500k) So you get all the range of light you r plant needs! (Buds like lower numbers, where veg likes higher ones!)

I use 40W which I pay around 11$ each at the hardware store =D I get 1-2 everynow and then, also make sure that your lights arent too far away, I keep my 40w (150 Inca) ~3-5 inches away. As long as the plants arent getting heat, you're good. I have a regular 20$ fan blowing on them, making them cool off A LOT!