how many plants can u put under a 400 watt lamp

im trying to get a g per watt on this grow , i wanted to see if anyone gets close to a g per watt with how many plants and their size under just 400 watts .i have 33 pants under mine there all a little over a foot tall besides one thats about 2 1/2 feet tall . they are a little over 3 weeks into flower ,also i have found a male flower one a plant or two but just one male flower all the rest of the plant is fine ,they are all clones,anyone have a problem like that ?

A female plant with male flowers? Hermie. Id jus kill it personally.
You can fit a lot under a 400w but 33 1ft tall plants is too much. At 1sqft per plant, that'd be almost a 6x6 area (not including taller plant that probably shades others) a 400w light is good for a 8sq ft area, 16 at most...

-Sir Killington

yea i dont think i have to many they have great light coverage and their not herm just one male flower no more have came up just one ,i have had plenty on hermis and they keep shooting out male and female parts thats y i am kinda confused

Well you might as well post pictures of that plant man.

You could probably push it to about 800 plans under a 400w.
Generally a full grown plant needs just shy of 0.5 watt to flourish

800 plants under a 400w lulz

yea i will post some pics tonight

About 5 under a 400W!

A gram per watt is an acomplishment that most growers never achieve. It took me a long time to get close to two pounds per 1,000 watt light, and I still have strains that I don't yield .75 GPW. I feel that a 400 watt light throws a good 3x3 footprint and has a penetration depth of around 8 inches. I would run an old school SOG and find a strain that doesn't branch out at all and only grows single colas. Run 25 plants and keep them all under 16 or 18" and flower them right out of the gate almost like an autoflower grow. If you have your techniques down pat and you understand what it takes to yield 1.0 GPW and you try a different style of grow you may possiblely reach your goal. Hope this helps.

W.C.C.

mushroom man said:

i will post some pics of my grow ,lights come on in a few mins

Click to expand...

Looking forward to it!

Of course if you use a light mover you might be able to grow more plants.

More plants is not the answer, I wouldn't put more than four under that much light, and flower them at about 18" tall, you won't get 1g/w, but you could get up to 3, maybe 4 zips, depending on the genetics. 33 plants? you need a couple KWs to make that many worth your time, or Scrog the shit out of them under 1 KW

ok lets try this again i couldnt get the pics upView attachment 2384950View attachment 2384951View attachment 2384952View attachment 2384953View attachment 2384954View attachment 2384950View attachment 2384951View attachment 2384952View attachment 2384953View attachment 2384954now it dubbled them lmao

i made step up so i can raise up some plants to get more light in more space ,so far it working well .i have had them plants for over a year 4 time budding ,they are 3 weeks into flower ,8 weeks their done and on the dot .

Yeah if you pack 30+ in there in 4" pots the lower branches won't get any light. It's alright to start them tight, I had to start from seed so I started more than I kept, and it caused them to stretch as they competed with each other to get to the light.

looks great regardless ,yea it looks packed in yr grow space , i wanted to make sure to use as much light as i could ,it gave it enough light were almost all the budding sites are getting light .ten grams is wht im shooting for on each plant i really dont see y i wouldnt