added two more CFL's .. Total of 6 27 watt. 1,750 lumen. 5000k
2 42 watt 2,600 lumen. 2700k
1 19 watt. Dont know ext amount of lumens.
6 x 1750 = 10,500 lumens
2 x 2600 = 5,200
=____________________
15,700 lumens
The lights could be closer. Im growing in a closet but my plants are on one side . Id say about 1 1/2 ft. x 2 x 7ft.
So about 6,000 lumens per square foot about?