HID Lighting- 400w or 600w SOG??

Hey all.

Just wanted to hear from folks who have used 400 & 600 watt HPS, and results in comparison.
I've always used 600w, and got nice production, but space is a concern this time around, so as far as heat issues/ ventilation, i'm thinking of going with a 400.

My flowering unit is roughly 3'x3', and im in veg right now, LST for SOG style crop.

Is 400w gonna cut it?

Thanks in advance.

I hope someone replies. I'd be wanting to know as well. I need to conserve energy.

400 watts will do 3' x 3' no worries

sworth said:

400 watts will do 3' x 3' no worries

Click to expand...

How many plants would you be able to do with that setup? Not maximum, but reasonable amount. I want a flower room with 400w Hps. Cfl for veg.

i run a 400w hps in 3x3 and its fine and cool with 6" extractor and c/f with a intake

Thinking about it me and my buddy ran an SOG with 12 clones in a similar sized space and pulled about a Q/P with a 400w metal halide. Not ideal and I was newer to the game then so i'm sure with an exhaust and a 400HPS it'll be good.
They're gonna be bushes

Damn 12 plants. So I'm good with 3. Haha. I want them to be happy and plenty of space for them with 3 Dwc buckets. How much would you think my yield would be with 3 feminized 500g/m2 indoors?

Follow this rule of thumb. 1 plant/ 1 sqft or 1 plants/ 2 sqft. Is most commonly used.
So if you have a 3x3=9 sqft. So you can grow between 4-9 plants maximum.
A 400 watt HID light covers a primary growing area of 5'x5' & the supplemental growing area of 8'x8'. So a 400 watt is perfect for your 3'x3'.