less is better less plants more bud they need space, you wanna figure about 10,000 lumen per plant... but other factors such as co2 n shit.. so i am acutally doing 8 under 600w but one is my mother for next gro.. autos are garbage unless you do them oudoors.. just saying... no real reason to do them indoor... sorry but thats the facts.. why i did them... im stupid... lol.. o and i got a killer discount on my seeds lol... cause i have bought from attitude since day one i get free packs instead of just a few free seeds... and i always buy the breeder promos also wich gives me another pack of seeds their choice.. look at attitude seeds.. But any pack of delsious seeds, get five fruity chronic juice.. Plus attitude gives ufos ontop of those freebies... Gotto kno how to shop my freinds.. staw away from autos indoors you will be dissapointed... my advice u have reg seeds throw em in and try to phase out the autos... save all your autos for behind bushes under trees on your walk home from work... in your garden.. you will be pulling dank ass shit in just and october... its a perk not a way of growing they are so unstable you can have a auto reach 6ft but still budding b4 july ya know.. ? discretion and common sence.. to be fair all my autos were freebies except four i bought to throw -outside next year.. figured id trail run em b4 hand so i know what to expect... FAST FLOWERING is where its at.. 8 weeks is actualloy pretty quick i have pulled almost a half pound off one in 8 weeks... only one and only one 600w lamp , in soiless... basic 1pt moss 1pt vermiculite 1pt perlite Entire dyna gro line by schedule boom 466G... 1 square meter .less is more