8 42watt @ 2700 lumens will only give you 2700 lumens. But having eight of them will give you better coverage. Put them as close as possible to the plants.
you guys are confusing me.... it doesnt add up as you put more cfls?? i visited a hydro shop today! the guy is still setting up the hydro store and hes all over the place lol. i bought some advanced nutrients.
drugs are bad... and so are CFL's... I've been using them but they suck... Use them for now... But know that you need better... And get better as soon as you can...