sq ft

Ive researched the amount light i need for my space. Now im trying to see how many plants i can fit in my room. I remember reading somwhere 1 plant per sq ft. My room is little over 16 sq ft, Not saying thats wrong, but i couldnt imagine 16 plants in this room. 3.5 x 4.5 x 8 600 watt mh 600...