how many Lumens per sq ft do I need Cfl

[420Josh]

My grow box is 2 ft in length, 1 ft in width and 2 ft high
How many Lumens do I need to get a decent bud?
I mean somewhere between light and airy and heavy and thick.

I use 3 35W cfls, each contributing 2400 lumens, I probably will put one more in there after I get another exhaust fan to control the temperature...

Please reply quickly :c

 

[HydroDyna]

The Basics Of Plant Lighting

The following is a MINIMUM light requirement for productive growth in the flowering stage:
CFL: 65 watts per square foot

130 watts.

 

[420Josh]

Okay thanks