Unsure about 400 VS 600 HPS

[CLOSET KING]

Go with the 600. My area is 4.5X4.5 and have grown with a 400, a 600, 400+600 and 600+600. Now i always use the 2X600 and get huge yields.

my room ic 4x4x9 i have 3 600w in a cool tube ventings fine but im always tieing back once or twice a day so they dont burn.What do you think about
running a 400-600-400 insted of 600-600-600




need input please
thanks J

P.S I NEED 3 FOR THE HIGHT

CLOSET KING Reviewed by CLOSET KING on 10-02-2006. Unsure about 400 VS 600 HPS I plan on having a 16 plant sea of green in a 4X4 (one plant per square foot), using some kind of hydro (flood and drain) in some kind of medium. Now my question is, even though all the books say 400 watt HPS is OK for a 4X4, will it be enough for 16 plants? Would it be OK to suppliment it with some CFLS or do you think it's neccessary I get a 600w? Rating: 5