What do you think my yield will be? Rough idea? Rep + all over.

[AllenHaze]

Given an anticipated 2-3x increase in size during the flowering cycle, I'm wondering what my yield will look like. I'm looking at some numbers here based off an ideal CFL grow setup where a gram per watt is the objective. I understand that many variables come into play including but not limited to: plant vigor, environment, nutrient availability, grower expertise etc etc. Thus far I've been a guerilla man so I'm trying to get a reasonable yield by comparison to what you would expect from an outdoor garden in direct sunlight.
I'm currently at 17 CFL in a 3' deep, 3' tall, 2.5' wide grow box. Flat white walls and 50cfm exhaust
Total output of 27,200 lumens
400 watt consumption
Lights two to three inches from plants.
I am planning to add a 400W hps in about 20 days or so and removing half the cfls while adding a higher cfm fan to the one that is there. Thanks


I don't think I'll come close to what I'd get outdoors but what do you guys think who have done a few full grows with cfls already?

 

[Jack Harer]

If you correct the overfeeding or cal/mag issue (Can't tell which from the pics) you have going on, I'd say between 6 and 10 ounces conservatively. It all depends on genetics, light, stress, growing methods, too many variables to even hazard an accurate guess. Sorry

 

[dwcnoob83]

Hi. No doubt you will be getting responses to this post with the same old opinion of " there's no way to tell" but to be honest it is very difficult to guess your yield. That being said I am of the belief that you can give someone an estimate given the information you have supplied. After all it's only an opinion.

From your post it is unclear how long you plan on vegging your plants for? They still look rather young at the moment though.

If you are new to growing, I would suggest pushing to achieve somewhere in the 0.5 gram per watt. 1 gram per way is rather difficult if I'm honest.

If you plan flowering under a 400 HPS I would hope you would yield around 200 grams.

On a side note, I have just finished a dwc grow. My first in fact. I had 12 uk cheese plants, under 3600 watts HPS. My grow room is 2m x 4m. I vegged for 5 weeks. I was using the sensi grow a+b along with Buddhas tree. I have dried 4740 grams. 4.74 kg. that worked out considerably more than the guideline of aiming for 1 gram per watt. I topped a couple of them but the rest were left untrained. I have given so much away it's unreal. I don't sell. Just take care of my friends.

Needless to say, I'm sticking with DWC.

Good luck

 

[plaguedog]

Worry about learning what makes a plant grow healthy. the yields will come after that.... That's all I can say.

 

[Jack Harer]

I get way better than 1gm/w lolli-popping as well. But all things considered, a low average of 2 or 3 oz per plant is safe (I think)

Just don't go expecting to corner the weed market in your area with that set up. You should get some sweet bud if you do your job right though......

 

[NorthofEngland]

Worry about learning what makes a plant grow healthy. the yields will come after that.... That's all I can say.

Absolutely!
My 9 plants had 24 cuttings taken from them, today
and tomorrow they go onto 12/12 FLOWER.

What yield do I anticipate....???
I don't.
How long in FLOWER before HARVEST...???
As long as they need.
Priority Number ONE...???
Grow plants as healthy as possible and use every hour of every days growing time as an experience based education in the study of indoor marijuana cultivation.

Just enjoy growing - yield and potency will naturally follow if a person loves growing and grows well.

 

[Prince Albert]

On a side note, I have just finished a dwc grow. My first in fact. I had 12 uk cheese plants, under 3600 watts HPS. My grow room is 2m x 4m. I vegged for 5 weeks. I was using the sensi grow a+b along with Buddhas tree. I have dried 4740 grams. 4.74 kg. that worked out considerably more than the guideline of aiming for 1 gram per watt. I topped a couple of them but the rest were left untrained. I have given so much away it's unreal. I don't sell. Just take care of my friends.

According to my gorilla math, 4740 grams is over 10 pounds. A 6 foot X 12 foot grow room is decent size, mine is a little bigger than yours. My grow room is 9 feet X 12 feet. The most yield I ever got was just over 6 pounds. I just don't see how you could get over 10 pounds in 72 square feet, unless your growing 5 foot tall plants. But even if you were growing 5 foot tall plants, it would limit you on the number of plants grown. Let's say generously you grew 25- 5 foot tall plants in your 72 square foot growing space and you were able to get a miraculous quarter pound off each plant. Still you would only yield just over 6 pounds. I'm stumped, could you please explain how managed to come up with over 10 pounds in 72 square feet.

 

[Jack Harer]

72 lolli-popped plants (good yielding cultivar) flowering on a 4'x8' table, 2K of HID above, an ounce and a half dry weight per plant, almost 7 lb every 60 days. I have gotten as much as 8.5 lb before. better than 1.5 gm/w.

 

[dadio161]

Nothing if they die. Why don't you worry about growing some healthy girls out instead of what night happen if you don't fuck em up. You will get between 2 grams and 2 lbs.

 

[dwcnoob83]

According to my gorilla math, 4740 grams is over 10 pounds. A 6 foot X 12 foot grow room is decent size, mine is a little bigger than yours. My grow room is 9 feet X 12 feet. The most yield I ever got was just over 6 pounds. I just don't see how you could get over 10 pounds in 72 square feet, unless your growing 5 foot tall plants. But even if you were growing 5 foot tall plants, it would limit you on the number of plants grown. Let's say generously you grew 25- 5 foot tall plants in your 72 square foot growing space and you were able to get a miraculous quarter pound off each plant. Still you would only yield just over 6 pounds. I'm stumped, could you please explain how managed to come up with over 10 pounds in 72 square feet.

I grew 12 plants, vegged them for almost six weeks. They finished around 5 ft tall. Maybe a touch smaller. They were grown in dwc 35 litre pots. 18 litres of air per pot per minute. 3600 watts of HPS.

I averaged a little over 10 oz per plants. One had 8 oz. one had 14.

I wish I could say I did something special but I didn't really.

 

[Prince Albert]

I grew 12 plants, vegged them for almost six weeks. They finished around 5 ft tall. Maybe a touch smaller. They were grown in dwc 35 litre pots. 18 litres of air per pot per minute. 3600 watts of HPS.

I averaged a little over 10 oz per plants. One had 8 oz. one had 14.

I wish I could say I did something special but I didn't really.

Kudos for your impressive yield. I don't bother to grow my plants that tall, maybe I should. In between 40 and 48 inches is my max, and I usually get around 5 ounces per plant. I only grow around 20-25 plants depending on how many clones thrived. But wow dude, would be awesome if you could post pics on your next grow.

 

[Jack Harer]

Nothing if they die. Why don't you worry about growing some healthy girls out instead of what night happen if you don't fuck em up. You will get between 2 grams and 2 lbs.

Prolly because much like us when we first started (OK, me at least) that very same question is asked by every new grower, much to the chagrin of the forums.

 

[dwcnoob83]

According to my gorilla math, 4740 grams is over 10 pounds. A 6 foot X 12 foot grow room is decent size, mine is a little bigger than yours. My grow room is 9 feet X 12 feet. The most yield I ever got was just over 6 pounds. I just don't see how you could get over 10 pounds in 72 square feet, unless your growing 5 foot tall plants. But even if you were growing 5 foot tall plants, it would limit you on the number of plants grown. Let's say generously you grew 25- 5 foot tall plants in your 72 square foot growing space and you were able to get a miraculous quarter pound off each plant. Still you would only yield just over 6 pounds. I'm stumped, could you please explain how managed to come up with over 10 pounds in 72 square feet.

Kudos for your impressive yield. I don't bother to grow my plants that tall, maybe I should. In between 40 and 48 inches is my max, and I usually get around 5 ounces per plant. I only grow around 20-25 plants depending on how many clones thrived. But wow dude, would be awesome if you could post pics on your next grow.

Thank you. I appreciate that. I will post pics of my current grow in the new year.

I have 12 again this time. I have 8 that look like they will yield similar to last time but also have 4 that are only small. I only took 16 clones but four didn't take. Four then took bloody ages. I put them into dwc a lot later. Only vegged them for two and a half weeks.

 

[AllenHaze]

Ok, I guess I have to clear things up. The three little ones in the front are three weeks old and have outgrown their pots. The nute burn on the leaves and phosphorous def in the petioles is a result of exhausting the resources in the grow medium and from using the same concentration compost tea/ferts as the older plants. There are three little ones that are clearly visible in the pictures however only one of them suffered nute burn while the others have some scorch marks from the bulbs but accepted the nutes with no problems. The plants were grown for over 5 weeks under a completely 6500k setup and lst to maintain a somewhat even canopy. They are very bushy and all their little tops have started to grow upwards as a result of the increase in 2700k bulbs and the flower light schedule (read up ). The 5 plants in the back have lush, green leaves. There may be a slight nitrogen abundance/toxicity but with minimal nitrogen supplementation during flower I'm hoping to clear that up. By the way I just realized the three little ones seemed to be the subject of the photo! Thanks. Here is a photo without the three lol.

 

[JohnDee]

AllenHaze,
I think it's poor form to promise Rep to people...for what, just responding to your thread?

Especially since you don't even follow through and give the Rep! lol So it's bait and switch...or what? Just leave that off your threads and let people participate because your thread is sincere and worthy...
JD

 

[Jack Harer]

Rep is pretty much worthless anyway. Just sayin'......

 

[Dogenzengi]

I agree w Jack,
Some people with more knowledge than I have lower rep points,
its just because I respond more than some others.
Rep does not equal grow skills, I'm only on my second plant and I consider myself a Noob.

HAPPY NEW YEAR!

 

[AllenHaze]

AllenHaze,
I think it's poor form to promise Rep to people...for what, just responding to your thread?

Especially since you don't even follow through and give the Rep! lol So it's bait and switch...or what? Just leave that off your threads and let people participate because your thread is sincere and worthy...
JD

I always rep back. I've easily given over 100 reps since I joined this site. I'm not sure what you're talking about unless you're being immature enough to try an start an argument- which I might add would surprise me coming from you considering you've been exceptionally quaint thus far. Anyways, I added the rep + thing as a force of habit. I was not getting very many responses but when I posted a promised rep + I got many more and ergo more potential for a collective answer. It's simple. I understand your logic of maybe people answering just to get a rep + but I don't just take peoples advice because they say so, that would be pretty foolish considering most of us don't really know each other and have no way to verify the individual's level of expertise. A person who has been growing for 15 years can join this site for the first time, have no rep and know more then most. There are literally a thousand different people right now repeating something they just heard without actually checking the facts thereby passing the ignorance that is so prevalent. Rep is worthless once you have attained a pinnacle rank and outside of this site. For those of you who have already gotten that far, likes and posts continue to add up for you am I correct? I appreciate your feedback and respect your opinions. I suspected it was too early to tell but wanted a few or several other opinions. Have a green New Year and thanks for the support.

 

[Buzerek]

"I'm currently at 17 CFL in a 3' deep, 3' tall, 2.5' wide grow box. Flat white walls and 50cfm exhaust
Total output of 27,200 lumens
400 watt consumption
Lights two to three inches from plants."

I could never understand why bother with 17 CFL,s at 400W outputting 27200 lumens, when you can get 55000 lumens of light from 400W HPS at the SAME total heat output, better penetration, NO DAILY tweeks & adjustments to keep small clearance from the plant tops. Or have same light output (27200) with 250W HID using less power and generating total less heat than CFL's?

CFL's in my book are great for seedlings and up to about 3 weeks of grow, I use 2 -6 CFL's for that purpose. Onece the total CFL wattage exceeds about 200W I switch to MH, then HPS (Have a new Apollo 600W dimmable system, works great, can switch 3 week old plants to 300W HPS at 50% power, then go up as needed).

So my answer without splitting hair is : you are going to get much less yield flowering with CFL,s than using HID of SAME WATTAGE. Cause HPS put's up TWICE of the lumens for given wattage than equivalent CFL.

The confusion and myth of CLF running "cooler" comes from different nature of heat coming from both sources. HID runs very hot concentrated heat radiating from the bulb, CLF of SAME WATTAGE generate SAME amount of BTU's (heat), but it is spread over larger surface, however it will warm up a room at THE SAME RATE as HID lights.

Simple remedy for concentrated HPS heat is a fan blowing on the bulb. I can have my 600W Hps light 12" above tops without glass removed from my hooded light, I REMOVED the glass cause glass absorbs about 10-15% of light, so whats the point? 600W hps light going through the glass or so called "cool tube" which is even worse become 500W light due to glass loses.

Isn't that simple?

 

[AllenHaze]

"I'm currently at 17 CFL in a 3' deep, 3' tall, 2.5' wide grow box. Flat white walls and 50cfm exhaust
Total output of 27,200 lumens
400 watt consumption
Lights two to three inches from plants."

I could never understand why bother with 17 CFL,s at 400W outputting 27200 lumens, when you can get 55000 lumens of light from 400W HPS at the SAME total heat output, better penetration, NO DAILY tweeks & adjustments to keep small clearance from the plant tops. Or have same light output (27200) with 250W HID using less power and generating total less heat than CFL's?

CFL's in my book are great for seedlings and up to about 3 weeks of grow, I use 2 -6 CFL's for that purpose. Onece the total CFL wattage exceeds about 200W I switch to MH, then HPS (Have a new Apollo 600W dimmable system, works great, can switch 3 week old plants to 300W 50% power, then go up as needed).

So my answer without splitting hair is : you are going to get much less yield flowering with CFL,s than using HID of SAME WATTAGE. Cause HPS put's up TWICE of the lumens for given wattage and heat than equivalent CFL.

The confusion and myth of CLF running "cooler" comes from different nature of heat coming from both sources. HID runs very hot concentrated heat radiating from the bulb, CLF of SAME WATTAGE generate SAME amount of BTU's (heat), but it is spread over larger surface, however it will warm up a room at THE SAME RATE as HID lights.

Simple remedy for concentrated HPS heat is a fan blowing on the bulb. I can have my 600W Hps light 12" above tops without glass removed from my hooded light, I REMOVED the glass cause glass absorbs about 10-15% of light, so whats the point? 600W hps light going through the glass or so called "cool tube which is even worse become 500W light due to glass loses.

Isn't that simple?

Hence the inquiry. If you have in fact done your research then I'm sure you know that hps lighting puts out more yellow then anything else- which I should add is useless for our purposes; most of what you're paying for is yellow. This is why I chose the cfl setup aside from the affordability factor. I've already done the math for my area and it would actually be less expensive by about $1.50/month to run a 400W hps. I've been eyeing the aforementioned grow light for a while and have been thinking of switching to hps for flower and cfl for veg as well. Thank you.