New Michigan Medical Grower

50-100 watts per square foot is a good target. 1 square foot per plant at a minimum.

Place your lights as close to the plant as you can - hold you hand palm down where you are just touching the plant. Position the light as close as you can; where you can still hold your hand there without burning it.

read read read (see the link below). You have many other issues to consider, light leaks, smell, ventilation etc.

https://www.420magazine.com/community/threads/how-grow-marijuana-everything-you-need-know.81264/

i wouldnt use MG for ANYTHING related to MJ. the soil sux and the nute products are very commercial. Follow master growers and you will notice NONE of them use MG. I used General Hydroponics and Fox Farm nutes-Fox Farm had GH beat, plus their Ocean Forest soil is something to swim in. Check around the net for discount gardening supplies. If you need something not ordered off the net. Head to Lowes for an Organic soil called "Jungle" it has a tiger on the bag. Make sure you grab some PERLITE (made by MG most likely on the shelf-lol) this will improove the airiation in the soil-MJ loves airey soil mixes...mix 2parts soil, 1part PERLITE and you got a nice startup soil that isnt too expensive! Good luck man!

use the new daylight 6000k energy effecient bulbs the more the merrier and you will notice a reduction in your energy bill asap by GE