how do you figure a 12 foot by 5 foot space is ment for 2, 1,000 watt lights? wtf? 4x4 for each 1k so at the very least 3, 1k's heres a pic of the space that will produce more than 4 pounds garunteed, I can pull 4 pounds off a 4x8 space
cause reality is you are going to use 4x8 spacing for plants and the other space to walk around and have water drums around and other shit i mean how will you get to any plants if you have no walk around space. anyway 4x8 plant space take up is 2 lights and perfection can yield 2 or more depending on strain and stuff