What's your gram per watt?

SchweeDubz

SchweeDubz

Well-Known Member
Average or just your last yield? What is your space and which light are you using? Any other details welcome of course.

I just purchased a 400w Vero29 kit (3000k) and I'm wondering what my ball park range will be. 5 plants in my 40"x40"x78" tent. I hear hitting 1 gpw is not that hard with LED but of course there are tons of factors. These pups are 8 weeks vegging and currently in the process of going into flowering.

Edit: Just a preemptive point, I know gpw isn't necessarily the best way to measure a grow but I'm still curious. If 400g is within my realm, well, that makes me a happy man.
 

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I seem to be in the 1.3+ range with QB. I genuinely think I could hit 2 if I had all the time in the world and didn't mind running a full tent of just one strain. Last crop I was only checking once a week

Yours looks tidy, I'll bet you top 1gpw
 
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1.5-2+ gpw is fairly common if you look around. I hit 1.7ish with 330w of autocobs by accident, 3 auto's in a 2.5'w x 5'd x 10"H closet. 2 auto amnesia in Coco hempys with added air(huge plants!). 1 auto cheese in super soil, she was topped and still gave me over 6oz. Didn't expect even half that weight. It was light's, genetics, medium and dumb luck. I have 2 auto's going right now that, judging by previous grows, will easily bust 1gpw. They may end up the size of the amnesia. I kinda hope not. lol

Judging by your grow, if things continue the way they are, you'll be happy.

Edit: It also looks like things are gonna get tight in your tent soon. :bigjoint:
 
SouthCross said:
Let's see here. 170 watts. 4 ounces. Average 2+ ounces per plant.

.68

4 COBs(mix of 3000K and 3500k), 2 gallon fabric pots, 2x4 tent and promix. Last grow was white widow. Next is Blue Berry.
Click to expand...

Lol is this a joke? 4oz = 112g, 112/170 = .65

Edit: My bad, didn't see the "." in your post. I thought you did 170/4. bongsmilie
 
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SchweeDubz said:
Lol is this a joke? 4oz = 112g, 112/170 = .65
Click to expand...


Nope. It's what the last crop measured. Using 4, 1212 chips. Driven at 36v. Two plants. Two estimated ounces each plant. Dried cured weight. The dry weight is a conservative figure. Probably about like 2.3 ounces on one. Closer to 3 on the other.

Why would you think it's a joke? I only grow for myself. I don't grow solely for bulk. All I need is about three ounces to last me to the end of the next grow.
 
between 1.3 and 1.5 (of the better buds) for 2x quantum boards in a 3x3 tent. Multi strain, no real canopy management, so a lot of buds that will only go to extract and not weighed.
 
SchweeDubz said:
Average or just your last yield? What is your space and which light are you using? Any other details welcome of course.

I just purchased a 400w Vero29 kit (3000k) and I'm wondering what my ball park range will be. 5 plants in my 40"x40"x78" tent. I hear hitting 1 gpw is not that hard with LED but of course there are tons of factors. These pups are 8 weeks vegging and currently in the process of going into flowering.

Edit: Just a preemptive point, I know gpw isn't necessarily the best way to measure a grow but I'm still curious. If 400g is within my realm, well, that makes me a happy man.
Click to expand...

What version Vero29 and what current? We can figure out your par wattage and you will have a better metric for min/max yield.
 
On my first grow with cobs I hit just over 1 gpw. My best has been 1.5 gpw. It's also strain dependent & grow style dependent. Im no expert grower so if I can hit 1 gpw you should be able to hit 400g for 400 watts. Unless you're a kacker ☺
 
SchweeDubz said:
Lol is this a joke? 4oz = 112g, 112/170 = .65
Click to expand...
Rahz said:
What version Vero29 and what current? We can figure out your par wattage and you will have a better metric for min/max yield.
Click to expand...

The kit is listed as v7 with Bridgelux Vero29 V7 Type C COB LEDs. It doesn't specify a CRI on timber.

The website also lists the following:

Total Wattage Consumption (@ wall): 400
PAR watts: 195
PPF: 910
 
On those sinks at 1.4 amps they should be putting out around 188 PAR watts.

I think a high bar to shoot for in hydro is 3.5 GPPW. I don't know the exact ratio converting to soil but some have suggested 1.5 GPW in hydro and 1.25 in soil so going by that metric would be 2.9 GPPW as a high bar.

Hydro yield high estimate: 658g 1.64 GPW
Soil yield high estimate: 545g 1.36 GPW

That would be 73/60 g/sqft in a 3x3. Very possible but at some point the light intensity provides diminishing returns. The likelihood of hitting those numbers would be better with the same lamp used in a 4x4, but I think you could hit those numbers with healthy plants with decent yield potential and proper canopy/light management in a 3x3.

Low estimate: what mc130p said.
 
@whitebb2727 "Edit: Just a preemptive point, I know gpw isn't necessarily the best way to measure a grow but I'm still curious. If 400g is within my realm, well, that makes me a happy man." Just curious man.
 
SchweeDubz said:
@whitebb2727 "Edit: Just a preemptive point, I know gpw isn't necessarily the best way to measure a grow but I'm still curious. If 400g is within my realm, well, that makes me a happy man." Just curious man.
Click to expand...
That is doable.
frigginwizard said:
Having a lot of variables doesnt make it "not accurate". Grams/watt and grams/sq foot are both important metrics to anyone running a room 12/12 full time.
Click to expand...
Not really.

More accurate would be grams per kilowatts hours used.
 
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