You do know what's coming right?
Could it be. About a pound?
no i don't that's why i ask...oh wait.
i'm sorry could you define zips
600w hid would do it. But in a space that size i would go with a higher quality LED. "COB" LEDs specifically cause heat will be hard to control from hid.
Youre using metric measurements. Are you in the UK?
i have a 400w and a 600w hps and mh. i was thinking about running one of those with the 110w led panel.
I think the 600w will be too warm to manage without moving too much air. Try the 400...but even that with the LED will be tricky.
why so?
Just too warm. Youll have to cool it by exhausting a lot of air and in that small space it will cause problems with the plants. They will grow, but not to potential. Give it a shot with what you have ... you got to start somewhere.... optimize later as you learn.
The 400 watt is it a digital ballast( just warm to the touch)? Or oldest analog (too hot for that space) because 400 with supplemental can do a fair yield in a right space...plant buds will need to be tied and angled equidistant from the light instead of above if you only have a 4ft high canopy to grow from
get a thermometer ,, plug in all those lights, do a test run Without Plants,,,,, see what your temps are,, only then can you make choices,, you have to experament some,,, before plants go in,,, trying to figure it out as you go,, often times results in dead plants