tell me what you think would be the difference between a 4 x 8 tent with a 1k on mover and the same tent with two 1ks? im thinking a big diff in yield so maybe if you get 1# per 1k on a mover you get 1.5 rather then doubling. but maybe if you havedone both you would know better then me.2 1k's on each one on its own light mover each one covering a 4x8 set them side by side you have a 8x8 area setup with capacity to produce about 2- 2.5 lb per 4x4 this is not gonna be to hard to acheive light movers effective double your light coverage for 1 light so (1) 1000 = 2 to 2.5lb on a light mover thats 4-5 lbs then another 1000 on a light mover next to it to make 8-10lbs