Highest yield 4x8 space

Sativied

Well-Known Member
Whats the estimate on veg time 2 weeks could pull that off ye?
Depends a lot on what you grow and how many plants and whether it's from seed or clones and the grow method and medium, but yes, given seedlings or clones and the right variety 2 weeks can be enough. In that example you quoted the 2x2 is a separate space so whether you veg 32 plants for 2 weeks or 8 plants for 5 weeks, or whatever, doesn't affect the total number of cycles in the flowerspace.
 

coughphee.connoiseur

Well-Known Member
Lets say 12-15 total under a 4x8 with (2) gavita 750's. Strain I'm not sure ill just pick a AVG yielder and say SFV OG from fresh rooted clones 6inches. Vegged for 2 weeks and utilizing the 2x2 space space as well. You thinking could pull off the estimated 40-50 oz ?

Or you thinking maybe longer veg 3-4 weeks max?
 

Sativied

Well-Known Member
Hard to say without knowing how fast those OGs veg and how much they stretch during transition. Ideally I would go for 18 plants, as in 2 x 9 plants. 3x3 plants on 4x4. Top all plants down to 4 main colas. 36 colas per 4x4. You could veg them in the 2x2 for the first 4-6 nodes, them remove the top so there are 4 branches left, then put in larger space and veg there for a week or so. 2x2 is obviously a small veg space for 4x8 flower, works best with more sativa/haze dom varieties that do most of their vegging on 12/12 during transition. Depends on the grow style too, hydro, especially something like nft, vegs faster and depending on strain and clone size sometimes needs no veg time at all.

The high end of that estimate is very doable if you utilize the space well, which is the case when you go for 36 colas per light and spread those out somewhat uniformly. Obviously 6 plants per 4x4 can work just as well, just use larger pots and top down to 6 colas per plant instead of one, and veg a little longer.
 

boilingoil

Well-Known Member
Lets say 12-15 total under a 4x8 with (2) gavita 750's. Strain I'm not sure ill just pick a AVG yielder and say SFV OG from fresh rooted clones 6inches. Vegged for 2 weeks and utilizing the 2x2 space space as well. You thinking could pull off the estimated 40-50 oz ?

Or you thinking maybe longer veg 3-4 weeks max?
What's you're growing style? I get 26 O's from a 600 se in a 4x4, coir drain to waste, 3 weeks veg, 9 liter pots.
 

coughphee.connoiseur

Well-Known Member
Not so sure will be running OG in the 4x8 but weather if so or not it will be similar genetics with about the same vigor. The source of the cut same pheno usually they flip at 8-12 inches max and end up with 3.5-4ft and top out height. Nice yields.

Not messing with hydro tho, and id say the cuts come in at 4-6 inches but only need one week max to get to the 12 inches of recommended flip height.

So top 2-3 will give 4-6 tops total per plant ye?
 

coughphee.connoiseur

Well-Known Member
Hard to say without knowing how fast those OGs veg and how much they stretch during transition. Ideally I would go for 18 plants, as in 2 x 9 plants. 3x3 plants on 4x4. Top all plants down to 4 main colas. 36 colas per 4x4. You could veg them in the 2x2 for the first 4-6 nodes, them remove the top so there are 4 branches left, then put in larger space and veg there for a week or so. 2x2 is obviously a small veg space for 4x8 flower, works best with more sativa/haze dom varieties that do most of their vegging on 12/12 during transition. Depends on the grow style too, hydro, especially something like nft, vegs faster and depending on strain and clone size sometimes needs no veg time at all.

The high end of that estimate is very doable if you utilize the space well, which is the case when you go for 36 colas per light and spread those out somewhat uniformly. Obviously 6 plants per 4x4 can work just as well, just use larger pots and top down to 6 colas per plant instead of one, and veg a little longer.
Okay excuse the slowness i believe i get it, i can top twice a week i suppose or 2-3 times in a 1.5-2 week period then flip em.
 

Tw BuLLY

Well-Known Member
Some guy just said he yielded 1700 grams off a 600 watt DIY cob in a 4x4 area , can't be right surely!! That's what I get in a 8x 4
 

Tw BuLLY

Well-Known Member
Where did you see that?
A guy in my group on fb, I didn't think its pos to get that weight in that space, unless he's got 40 foot ceilings:) maybe I'm wrong but in 4x4 with normal ceilings, no chance I think, if its right I best start studying his cob:)
 

coreywebster

Well-Known Member
Some guy just said he yielded 1700 grams off a 600 watt DIY cob in a 4x4 area , can't be right surely!! That's what I get in a 8x 4
Depends on if its wet or dry or someone claiming dry who doesn't know what dry is.

Interested to know how many plants in that space and I assume its a horizontal set up.
That's a record breaking amount in GPW or GPSF, a bit too much to believe.
 

boilingoil

Well-Known Member
I've grown 30 ounces under 600 watts of HPS in a 4x4 many times, Knowing what 30 looks like in a 4x4, I can't imagine 60 fitting in a 4x4.
 

Tw BuLLY

Well-Known Member
He grew 9 plants in a 4x4 with his DIY 600 watt cob 1700 grams, he said loads get that weight with DIY Cree cobs, that's DRY weight too loll, I'm happy with 30 good ounces out of my 1000 hps but if that's true which I doubt then gotta make one asap:)
 

boilingoil

Well-Known Member
He grew 9 plants in a 4x4 with his DIY 600 watt cob 1700 grams, he said loads get that weight with DIY Cree cobs, that's DRY weight too loll, I'm happy with 30 good ounces out of my 1000 hps but if that's true which I doubt then gotta make one asap:)
Does he show any of the grow, pics of the harvest? There are a lot of veteran growers on here some running HID's some LED's and I don't hear those numbers on this site.
My only other thought would be that his base of his plant layout is 4x4 with his actual canopy layout more like a 5x5 or larger.
 

coreywebster

Well-Known Member
He grew 9 plants in a 4x4 with his DIY 600 watt cob 1700 grams, he said loads get that weight with DIY Cree cobs, that's DRY weight too loll, I'm happy with 30 good ounces out of my 1000 hps but if that's true which I doubt then gotta make one asap:)
Cool, I use cobs myself, last harvest on that side of my tent (half my 8x4) was 37 oz. Which is a personal best for me by a country mile. I have previously done a test modular scrog getting 9oz from 1.5x2ft net, if I could scale that up (I cant due to perpetual and veg tent limitations) then I could imagine 40-45 oz could be possible for me in 16 square foot. But I couldn't imagine hitting more since I know how it would fill my tent to the limit.
If I hit 1.5gpw I'm happy as larry. I know cobs are good and seen a few hit 1.5+ GPW but hitting 2.8 is crazy numbers, of all the growers on here I have only ever heard one person report numbers like that and I have not seen the evidence.
Hope this dude is hitting numbers like that for real, its a hell of an achievement. :bigjoint:
 
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NewBKind

Well-Known Member
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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