What size room for 400 watt?

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spek9

Well-Known Member
2x4x5' works perfectly for me, with room to spare.

3x3' is the de-facto standard for a 400w.

Welcome to RIU :) Why don't you explain more about what you're trying to accomplish?

-spek
 
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Socalsun7

New Member
Thank you. Not trying to go big but 3-4 plants or more just depends on what info I find out. Just trying to as much info before I begin.
 
Dannoo93

Dannoo93

Well-Known Member
4x4 max is what I have mine in...I do 6 plants veg if ur flowering no more then 4 plants really no.bigger then 3 gal pots

Dannoo93
 
Mr. Krambo44

Mr. Krambo44

Active Member
Grow shorties. Don't waste time Or space growing bushes that are only gonna make popcorn size buds. I flower mine 2 days out of the clone box. Shorter plants finish a little faster and without all the fan leaves and side branches there's more light for them. Result IMO bigger buds. I've been doing shorties last 3 runs. Short plants, big buds.
 
Green Troll

Green Troll

Active Member
i use a 400w for vegging in a 4'x4'. i have flowered using 400w but i think 600w would have produced better results. i certainly wouldnt go above that size.
 
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althor

Well-Known Member
4x4 is actually just a little too large for a 400 watt, so basically anything less than 4x4 or 16 square feet.
600 watt is ideal for 4x4 or larger.
3x3 is ideal for 400 watt.
 
assrabbi

assrabbi

Well-Known Member
You'll be satisfied with the 400watt in a 3x3 tent OP..

I will mirror grorite's sentiment, 4 in that area would be tight. Personally I would only bud 1 or 2 plants under a 400watt.
 
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