400watt hps how many plants?

I just want your guy/girls opinion on how many plants you'd grow with a 400watt hps, grow area is 5X5X7

It all depends on your style. I would first of all get that area down to 3x3 or 4x4 at the most for a 400watt light.

You could grow SOG style and fit about 36 plants or more under the light. You could grow some nice bushes and do anywhere from 4 to 8 plants depending on the size of plants after veg. You could grow a SCROG style and fill the whole area with 2 plants.

Height may be an issue. I don't know...you haven't given us much to go on. Seed? Clone? Hydro? Soil?

Drink!

u want my advice get another 2 lamps n grow just 1 plant lol (do,h)

yep jacks right, you can fit loads with sea of green or about 6-8 big bushes. its all about size.

i have about 8 under my 400 i use mirrors and a flat white paint and never had a problem and i veg for about 8 weeks

8 is fine...but get rid of the mirrors. They cause hot spots. You are much better off with flat white everywhere instead.

Drink!

mirrors? what mirrors.

TheGardenMan said:

mirrors? what mirrors.

Click to expand...

These mirrors:

ebolick said:

i have about 8 under my 400 i use mirrors and a flat white paint and never had a problem and i veg for about 8 weeks

Click to expand...

Drink!

TheGardenMan said:

I just want your guy/girls opinion on how many plants you'd grow with a 400watt hps, grow area is 5X5X7

Click to expand...

Without a light mover, your growing ability with a 400w hps is about a 20-22 inch radious from the bulb...any pot plant beyond 22" is not getting sufficient lumens to grow...depends upon how big your plants are...I do 4 white widows with no problem under a 430w hps sonagro...but you could easily do more in a sog style grow....

BTW, I heard mirrors is a no no...the glass eats the needed spectrums of light...flat white paint or mylar are the way to go...

well how big is the closet and yeild depends on a number of factors ..... strain, food, temp, and other unpredicatble things.

Im sorry i thought you were saying i was using mirrors

some guy said he was but not you

No sweat Gardenman...it wasn't directed anywhere but at the post I quoted. Just didn't want someone to think mirrors were good for light reflection.

Drink!

I am growing 1 plant under a 400w light but its in a cabinet. you have a little more space. check out my grow
https://www.rollitup.org/grow-journals/39360-lowrider-2-grow-journal-first.html
please comment

I have a 400W and am growing 5 plants, abou 3 and 1/2 foot tall, n o problem. even have a 5 foot tomato plant in there, not getting much light, but I dont care hes not steelinmg it from my pot!!!
Id keep the room size the way it is, and just grow 4-6 plants, than bu a second 400 watter when you can, then you can do some real good things

instead of buying another light, try a light mover... you can always get another light if you increase your space...a 400w with a light mover can cover an 8'x4' space just fine, a 4'x4' space without the mover...

Puffin Afatty said:

instead of buying another light, try a light mover... you can always get another light if you increase your space...a 400w with a light mover can cover an 8'x4' space just fine, a 4'x4' space without the mover...

Click to expand...

you know where to get one online under $300 or how to diy one? rep +1,000,000,000,000 for anyone who does.

For the price of a light mover and the constant repairs and bullshit that go along with them...why not just get a bigger light?

Drink!

ebolick said:

i have about 8 under my 400 i use mirrors and a flat white paint and never had a problem and i veg for about 8 weeks

Click to expand...

In the condition i use im my room if i veg. for 8 weeks i would have plants bigger then me!

Last batch i grew i had 2 plants about 6 feet tall and 3 feet wide and i only veg. for about 3 to 4. some plants depending on the strain 2-3

i can only go by with what works for me, i know many people are going to jump on me for this but i will never grow without mirrors again. I use to use mylar and the white walls but when i added mirrors lets just say the proof is in the pudding,

*As for the hotspots i have heard of this but never had a problem.


let the bashing begain