20 by 12 ft grow op

how many 1000 watt hps/mh lights should i run for a 20x12 grow? i will also be growing a crop of the grizzly weed outside. but i only needs the sun for that im told

well skam let's do some math

20x12=240 sq ft

5000 min lumens per sq ft = 5000x240=1200000 lumens

go with solarmax 1000w bulbs at 147000 lumens per bulb

1200000/147000= 8-9 super hps systems

to grow optimally:
8000 lumens per sq ft = 8000x240=1920000 lumens
1920000/147000=13-14 super hps systems

-pot