vert is not worth it for personal grows in my oppion
just got done whith one net me 2.2 elbows (LOL)
1 lb per 600 is not that far off
i put 6-10 depending on size but find 16 to be best but still do 6-10 to keep # down
i pull atleast 1 lb each 600 every grow i have every done in cludeding my first
cheak out this thred and relize heath is one of the greats but see what 2-3 600 can do.then estmate you can do half of what he does lol
https://www.rollitup.org/grow-journals/101347-critical-mass-tree-grow-x.html
on post 13 he has pics of a 2 light setup where he pulled 4 elbows whitch is 1 more then the best 2 lightgrow i ever had and damm near double my avg and i have been growing a good # of years
and to who ever makes a post like this
For veg: 1 1000 HPS, 2 x 400 MH, and sometimes an aditional 400 MH on cool days.
Flower: 1 1000 HPS, 2 x 400 MH
do not listen to them
veg uder a 400 mh at most unless you have 7-8k of flowerthen you may need 2 400
plan tp spend lowside 2 grand on a killer set up
best to stick to your 600s you have some panda film and a carbon filter for a couple grows then look to go big