Is 425w of Vero29 LED enough for 4x4

[Uncle Romulus]

I think the standard is 550 to 650 watts in a 4 x 4. Most run their COB's about 1400mA. I go down to roughly 800-900mA. It depends on what I am growing. I have the flexibility to grow any size plant.
Strips require a fairly even canopy, cause the mid range LED's peter out at farther distances. I can slam a reflector and a mag lens and push PAR well over 1000 at 3ft to ceiling height gaining spread.
COBs have the power to perform.

I have to agree with you there. The cobs seem to outperform everything else for decent nugs down low. I myself usually just prioritize a foot and a halfish deep canopy-wise and lollipop and that. Usually have too many plants jammed in for anything low to do shit besides waste the plants energy anyways. I like the idea of cobs but for my style I might want the qb/strips. Still reading and researching before I drop all the $. I want to do it once right. Was sold on cxb/Veros until I realized how many I’d need to do it properly. All them heat sinks. I’m not a very handy/tech kinda guy at all. I considered a timber kit for a time.

 

[DET—PDX]

I have to agree with you there. The cobs seem to outperform everything else for decent nugs down low. I myself usually just prioritize a foot and a halfish deep canopy-wise and lollipop and that. Usually have too many plants jammed in for anything low to do shit besides waste the plants energy anyways. I like the idea of cobs but for my style I might want the qb/strips. Still reading and researching before I drop all the $. I want to do it once right. Was sold on cxb/Veros until I realized how many I’d need to do it properly. All them heat sinks. I’m not a very handy/tech kinda guy at all. I considered a timber kit for a time.

COBs are known for penetrating the canopy better for sure. I’m pretty confident I can run vero’s 900w dimmed down around 50-70% and get really amazing flower results. I scrogged and lollipop too, it just makes sense to take advantage of the light spread.

I'm a hobby grower all day long, and when I bought my 4x4 tent couple years back, I did my research on lighting.
What I ended up with was 400 Watt Vero29 V7 3000k purchased from Timber.
According to Timber, this light covers 36" x 36" for flower. That never worked out for me. It ended up covering the entire 4 x 4 out of necessity. lol.
To Damn hard to hold the girls down, but yea, original plan was to use 36" x 36".

I have been very impressed with this light!

So after everything I have read over the last couple years, I have pretty much come to the conclusion that 470 to 500 watts is supposed to be the "sweet spot" for quality led in a 4 x 4.
I always ran the Veros at 50 to 70%. Use a Kill-A-Watt meter and mostly ran around 250 watts at the wall.
So knowing what 250 watts of COB has done for me, I would like to see the difference another 250 watts thrown in there will make.
I want to check out that "sweet spot", see what it's about.
I know I can double the wattage, but just how much will potency and quantity increase is the question? And what does it increase most?
No way it'll get close to doubling in either category.
But we'll find out soon.

Bodhi Space Monkey
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Yeah they say it really depends on the ppfd you’re getting. I believe Dr. Justice showed that between 400 and 600 ppfd was the biggest jump in yield, but 600-800 and 800-1000 had smaller increases. They found 1000 ppfd was the sweet spot of efficiency and yield for larger set ups, may not be as important for hobby ones.