ok thanks for all the previous help i still dont understand one thing...if i go to home depot and they sell 400w and on the box its labeled HPS does this automatically mean it will work for growing? becuas ethey sells these for around 20 dollars. if these would work i was going to pick up two, but my other question is what type of light fixture do i need to get cus the highest i could find said for 150 watts.. so i didnt no if theirs a conversion factor or anything but that seems awfully low.
if this will not work i was gunna go with 4- 42w-cfl's and a 70 watt hps security light...would this be sufficient for the entire span of the plants life?
if this will not work i was gunna go with 4- 42w-cfl's and a 70 watt hps security light...would this be sufficient for the entire span of the plants life?