lol i found some cfls but theyre all 13w
can i use flood lights? i have alot of those
That's perfect. Probably 70 lm/W. most CFLS are under 65 lm/W, especially as wattage increases the efficency drops. Though more small bulbs will produce much more heat due to all the ballasts.
how many lumens would i need per plant?
Depends how big your plants are.
Figure a minimum of 13 watts(CFL's actual wattage!) per cubic foot.
so how many lumens per cubic feet?