20 light, 25 plant, Screen of Green

  • Thread starter BC farmer
  • Start date
  • Tagged users None
C

cheech

795
43
Really cool grow bc farmer. I'm curious what your room dimensions are so I can estimate your watts per square ft.
 
true grit

true grit

6,269
313
absolutely stunning! I say stick with 600ws and see what ya can get outta them. I run screens too and am seriously considering switching to 600w's from 1k's for better heat control and more spread light intensity.
 
BC farmer

BC farmer

185
93
cheech said:
Really cool grow bc farmer. I'm curious what your room dimensions are so I can estimate your watts per square ft.
Click to expand...

Hi Cheech,
We calculated it a while back, forgot the numbers but believe around low 30's..
Dimensions for the actual grow are 19x19
Build out ( control room) are 17x15.
 
C

cheech

795
43
Oh wow.. That's awesome man. Have you ever run 60+ wsf, or do you usually run it that way? Any thoughts on watts per square foot? Ie - why it might or might not be advantageous for some rooms to utilize higher wsf than others.
 
ttystikk

ttystikk

6,892
313
cheech said:
Oh wow.. That's awesome man. Have you ever run 60+ wsf, or do you usually run it that way? Any thoughts on watts per square foot? Ie - why it might or might not be advantageous for some rooms to utilize higher wsf than others.
Click to expand...

Texas Kid had an old thread on various setups he ran, and the watts per square foot of each- and his results. An interesting read...

Long and short of his findings; better results as you get more light intensity, and cooling problems grow as the square of the area involved.
 
true grit

true grit

6,269
313
I definitely hear that ttystikk, but i can say from personal experience in friends gardens that good and well placed digi 600's and a solid canopy throw just as large/dense buds as any i throw with 1000's. I found that out as well when i had too much light in a 1000w vert set up...had to stagger my on/off with 1k's and drop intensity some to get consistent growth.
 
C

cheech

795
43
Cooling problems shouldn't be a problem. If we can spend 400 for heavy 16 base nutes (I don't) then you can cough up the extra money for a mini split. I'm curious at 30 to 50 wpsf compared to 60-80 wpsf.
 
hort-hog

hort-hog

55
33
flowamasta said:
I like the sound of 1 600 per plant...adding 1000's would be a very difficult task to calculate in itself. and where to put them to gain sufficient value. 600 per plant is ideal in your system in my opinion, if you want to play with adding more yield you could either veg for a tiny bit longer, keeping the plants a little lower and spreading them further in the screen. I also top a few days before flowering to increase my canopy size to let lower stuff come up and join the heads. I think you will surprise yourself (and everyone!) with what you can do here.....with the tiniest variations in veg-time and scrogging.
I only veg for 4 weeks. I have mates who veg for 3 weeks and still get over half lb per plant... :) including perpetual grows.
Click to expand...

That is precisely what the plan is and I think it will really show when you see some of our current pics and pics still to come...
 
hort-hog

hort-hog

55
33
One more row of 5 600's would put us at 50 wsf.

Which would be cool to try.

I would be inclined to implement the extra lighting in bud when lower humidity is acceptable, due to higher run fractions of the a/c.

For now I feel the efficiency is good but yield numbers could definately be improved upon.
 
ttystikk

ttystikk

6,892
313
4x1000w hps = 4000 watts
8 feet square = 64 sq ft
4000/64 = 62.5 wsf ...and results are pretty good at this intensity.

While this may seem like a simple enough yardstick by which to make comparisons, there are so many variables unaccounted for that I can't recommend using this scale. Just two of the variables that come to mind immediately include the efficiency of the bulb/ballast combo (which itself depends on many factors) and the distribution pattern of the reflector.

To be at least a bit more precise, I suggest the use of lumens per square foot- or centimeter, if you prefer. This would at least account for efficiency differences in the lighting, although it wouldn't eliminate the hood as a variable unless you're taking actual measurements as opposed to just using numbers from a chart.
 
BC farmer

BC farmer

185
93
This is after 60 hours with three guys and about twenty with two, training and pruning. Most holes in the mesh have at least one bud site. Tunes cranked, good times:)
Yesterday Nematodes were watered in to help against the RA battle and today we watered Caps bennies in.
PPM is 1300 and RH 60%.
We are two weeks in.
P8300001

This was taken in the first week of flower

P8300004

This pic was taken just after we finished training (bending and pruning)

P8300006

So was this one

P9080007

today..

P9080013


P9080015



P9080016


P9080017



P9080018
 
You must log in or register to reply here.

Latest posts

Top Bottom