Highest yield 4x8 space

coreywebster

coreywebster

Well-Known Member
NewBKind said:
That makes me happy to hear because I started using a cob array last month. I have 18 cxm-22 3500k 90cri cobs over a 4x8 area. If i run them soft at 1200 watts I get 37 watts per square foot. I can run them as high as 1680 watts for 50+ per. I haven't added any flower initiators yet though.

I don't know what this will translate to in yield but my fingers are crossed. Once the room is finished it will be the flowering area for my perpetual grow and I'll have another 4x8 with higher color temperature running as my veg/clone area.

I'm running pure organic under the 4x8 right now in 2 gallon smart pots with 50/50 happy frog + ocean forest mix. I am growing my mothers right now in those just giving plain water.

To maximize yield in a 4x8 you can't do a perpetual grow unless you have a separate area to veg.

Taking the time to learn hydroponics or better yet high pressure aeroponics will increase your yields. I will eventually build a HPA system for my setup and run all my clones through an ezcloner low pressure aero setup. There are 2 big dynamics to yield in reality, photon delivery to the canopy and oxygenated nutrient delivery to the roots. If you are already growing in coco take the leap to aero. The ome limitation is that with aeroponics you rin the same nutrient though the entire system so multiple strains with different nutrient requirements are not possible. DWC bubbler buckets are a perfect medium if you want super oxygenated nutes and strain versatility.

If you do step up to coco/hydro/aero, specifically aero, I'd recommend Current Cultures nutrient line. They offer 2 lines, are the purest cleanest nutrients I've ever used and perform incredibly even at levels as high as 1500ppm (can you say obese plants). They also have the best flush I've ever used Current Cultures UC Roots.

For coco I'd try NFTG + Mammoth P, I've never tried either but heard amazing things about them in coco.
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Just got an alert for this thread and we are now a year on, I see you have been on a few weeks ago.
What has been your impressions and results ect from your set up? Did it meet your expectations?
 
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tokeycones

Member
blackforest said:
I always get about 24 oz out of my 4x8 tent every time. 12 plants, 10 plant, 6 plants. As long as I fill up the canopy it's almost always the same yield. Under 2x 600w.
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really? i got 24 oz on my first ever grow in the 4x8 using 1/2 the space and 1x 600w hps 1x600w led (only 147 true watts)
 
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tokeycones

Member
So for this run i have 2x 315w cmh 2x 2000w led for a total of about 1550w at the wall, you think i can get 3+ with that lighting? i have humidifier /dehumidifier air con unit ect so environment will be on point throughout the grow
 
boilingoil

boilingoil

Well-Known Member
tokeycones said:
So for this run i have 2x 315w cmh 2x 2000w led for a total of about 1550w at the wall, you think i can get 3+ with that lighting? i have humidifier /dehumidifier air con unit ect so environment will be on point throughout the grow
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A lot of variables about a yield estimate this early, but if you have everything in order it is doable. I get a kilo+ out of 600 watts of LED's in a 4x6 area.
 
Zoonotic6988

Zoonotic6988

Member
I run 4x8 tents, 2000watt of normal HPS, flood and drain tables, 80 plants in each, SoG. Usually 1.2GPW ~depending on strains. Know it's older thread but very common setup :)
 
Jimmy_Nugz

Jimmy_Nugz

Member
I was intending on doing 2k hps for my basement crawl space grow which is currently blocked out for 4x8x7 grow area. Anyway, that shit did not pan out as I’m not about to hire an electrician to redo my circuit breaker so I can add a circuit to buy an AC to cool the plants I still can’t do better than 12oz/4x4 group. Thinking of getting 2x4 cob equivalents for either side of a 1k hps(possibly one of those hps/mh dual spectrum bulbs) to cut my power draw and bring down my summertime operating temperature. And recommendations?
 
Jimmy_Nugz

Jimmy_Nugz

Member
Mullalulla said:

That tray is a 4x8 with 6 315's over it. 6 diferent strains 7 plants. I harvested just over 4lbs dry. My plants did lean a bit outside the 4x8 footprint but you get the idea.
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Wtf man, just when I thought I was gonna settle on the 1k hps and 2x SF-2000’s, here you go with THIS bs. Okay what kind of gear do you have to keep that below 90degF in August?
 
Mullalulla

Mullalulla

Well-Known Member
I have a minisplit blowing right over the lights. I flower at night so I can take advantage off off peak and super off peak hours.

Said mini Split

1:17 in that video will show you it. This was early on befor the condensate pumps were put in and other stuff.
 
Mullalulla

Mullalulla

Well-Known Member
Jimmy_Nugz said:
Wtf man, just when I thought I was gonna settle on the 1k hps and 2x SF-2000’s, here you go with THIS bs. Okay what kind of gear do you have to keep that below 90degF in August?
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I went back and looked at your other posts, ya, I had a electrician friend come and install a new board and ran 240 to the room, all the lights/ ac all 240.
 
Jimmy_Nugz

Jimmy_Nugz

Member
Wow that’s not terrible. Maybe it’s time to check out angie’s list before I go dump a grand on lights. I have serious trust issues about tradesman getting half done and disappearing. Fuckin’ relatives.
 
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tokeycones

Member
kmog33 said:
4 lbs a 4x4 with ~1500 watts of hps isn't really doing that great with a strain that yields...View attachment 3488062 I can sometimes get ~3(just under) out of a 600 watt hps in my 2x4, so with 4 of them that makes closer to 9, an that's with 600s not 1ks for lighting...

There is a reason I gave a space max and realistic match..

Sent from my iPhone using Tapatalk
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God you're full of crap hahaha . That is Far from a good example of a 4x8 table and you are trying to claim you get over 2gpw out of tradtional hps hahahaha. 10lb in a 4x8 mate you would be in the Guinness world book of records.
 
chomchom

chomchom

Well-Known Member
Funny stuff. Wet weight, roots and all.

I’m setting up a new 4 x 8. (3) 315 LEC’S, and (2) 48” COBs. The LEC can’t cover 4’, so the 250W 5 light COBs cover the other 12-16” sliver. Have been running 2 LECs and a 48” COB in a 5 x 5 for several years.

5 x 5’ is an awkward width for tending to a full canopy. The middle never gets the attention it should, and my back hates that $hit. With the 4 x 8, I expect manageable temps, and a big bump in morale while pruning and doing other chores.

Only 4 + weeks until we step up to 4 x 8, which corresponds to a harvest of amnesia haze, acapulco gold, Durban poison, and SK1. Have a nice seed collection after working in cannabis industry. Should break 2 lbs of dense bud, plus larf, some of it decent. The 315 penetrates pretty well.
 
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