2 ft long 4 pin cfls can I use these for a grow light?

Gsxkid

Active Member
I have access to a few 2x2 light fixtures that have 3 40w 2ft long cfl type bulbs in them that I would love to use for a grow. Do you think these would work alright? They don't have a k rating on them but there like a bright white color does anyone have any experience or thoughts on this?
 
Top