600 Watts in 4 SQ FT?

Ive seen a cabinet with dimensions, 3 feet wide, 20 inch's deep 5 feet tall. Using the LST method to seriously maintain height, would a cool tubed 600watt (MHveg/HPSbloom) be too much even if air temperature is absolutely no problem? My concern is the price difference between the 400 and 600 is incredibly minimal so incase one day i'd sell the system or attempt a larger space, i have scalability on my side. and oh yeah, i like DM liquid light foilar spray.

so if i ended up using all of that would i be destine for doom? anyone with experience? and remember temps are easily manageable with the cool tube.

A 600w uses only 50% more power and puts out twice the light output of the 400w.

Lemon, who makes that bulb, I'd like to take a look at it.

go for it.. if temp is no problm your good to go..good luck and peace.

you should de good i have 600 in 2x3x6.5 but my res is nealy 2 ft tall

should b ok. I run a 600w hps cooltube setup in a 1mx1mx2m budbox tent, temps 24-26 middle of summer here in uk