Recommended tent size using a 400w HPS

Hi

Whats the recommened tent size using a 400W HPS bulb?

thanks

400W is supposed to be ideal for a 3'x3' canopy. You can get a bigger tent though so you have room to move around and room for expansion. Your canopy coverage can vary some though depending on your hood type.

yup 3x3 is perfect but a 4x4 will give you the extra room for fans and such

thanks guys

Yep, I'm running a 400w cooltube in my 2x4x5' tent now, 3 plants, today is day 60 of flower. It's a little tight but works very well, but I'm going with a 4x4' my next run and a air-cooled hood instead of tube.

-spek

Ok, I have a 400W HPS -- bought it for a 2x3x5.5 tent and I think it was perfect for that size. My plants outgrew that, so I transferred everything to a 3x3x7 tent. My plants were tall at that point, so the light was still fine, but I did feel that tent was too big for that light. I would have wanted a 600W for that for deeper canopy penetration and for more power around the edges of the tent.

Hope that helps!

3'x3' is optimal but a 4'x4' works well to if you control you canopy height.
With a 4'x4' you need to keep everything very even in height, short and wide instead of narrow and tall.

While a 400w will work just fine in a 4x4 but its much better suited for a 3x3, unless you are really good at height control.

thanks for all the help guys

Check out my journal, I used a cheapo winghood 400w HPS for almost the whole grow and it turned out great for my first time. Over 250 G's off 4 Autoflowering plants in my 3x3x6 Tent.