gram per watt rule/ question about yield

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express_fix

express_fix

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Hello.
This is my second grow attempt, so please bare with me.

http://img109.invalid.com/img109/9707/2floweringweek.gif
Cabinet size is 180 cm (height), but i have 160 cm available due to the lamp being on top.

Light:
I am using an 250 W HPS bulb with the ballast kept outside the cabinet with 3 additional CFL bulbs, 25 W each. and one bigger 50 W CFL, all are warm spectre - 3700 - 4200 K.


Ventilation:
1x120mm cool air intake fan at the bottom (with DIY light trap and grill)
2x120mm air exhaust for negative pressure (with DIY light trap and grill)

I have only 2 plants - Herijuana x BigWhite fem (freebie) and UberKush fem by Sannie.
They were in vegging stage for 5 weeks. (from seed to 12-12)
They are in flowering week 2 now 12/12 now, looking good, both have shown sex already (females).
(so far i have popped only 2 seeds and i received an 100% success rate! )

they are in big 20 liter pots (5 galoon) pots, without SCRoG or LST or supertopping - only regular growing with mineral
nutrition by AQUALOGIC (www.aqualogic.nl) using this
schedule

So far the plants are 90 cm tall (with pots length included). As far as i have been informed i can expect a 2X - 2.5X stretch on those genetics.
They were 66 cm when i swithed to 12/12.
I will bend the top buds a little if i have to.

-My question is how much approximate yield can I expect from the HeriXBig white and the Uberkush ?

p.s. This is my second attempt so don't be mad at me for being curious - also this grow attempt is to provide me with quality material strictly for private consumption only!

i read about a "rule of a thumb"
if you are a good grower you can get 0.5 gramms pet watt.
very good growers can yield up to 1 gram for watt in scrog / LST setups.
so whats up? can i hope for at least 0.25 gramms per watt in my current situation?
 
Green81

Green81

Premium Member
Supporter
777
38
Hi express

start supper-cropping all you tops, bend them in the direction of the light, these main tops is where all the magic happens, also you still have time to remove all the lower growth of your plants. Doing this will ensure that most of the energy reaches the top buds which recieve 80% of the light. This technique is called lollipopping. All the information is here on the farm.. Have a look a see if this will work in your situation, in most instances these techniques will push your Gram - Watt ratio.. good luck bro

G81
 
express_fix

express_fix

92
8
thanks
it seems that i "lollipopped" without knowing because I took a two of the lower branches before flipping to 12/12 in order to clone them. (cloned successfully )
so i did it right on time.

i don't plan on trimming more now, instead i plan to bend the top buds
 
express_fix

express_fix

92
8
today i bent the tops so the lower canopy can get a bit more intense light
http://img404.invalid.com/img404/2057/topsbent.jpg

So now that the tops are bent over I think/hope that the lower buds will receive more intense light and this might help me achieve a higher gram per watt ratio, as i will not have one huge top bud, but a whole canopy, something like lst, but i bent them over directly with a hard wire at 45 degrees! Perhaps this might stress them, i have my fingers crossed.
 
mastacheeser

mastacheeser

2,126
263
it sounds like you are going in the right direction
what i suggest is dont talk numbers, i think its bad luck lol
it might just come from my first six months of being extremly disapointed until i got stuff down
 
express_fix

express_fix

92
8
it sounds like you are going in the right direction
what i suggest is dont talk numbers, i think its bad luck lol
it might just come from my first six months of being extremly disapointed until i got stuff down
ditto
my first indoor grow attempt also was a fiasco which resulted in only 3 grams of dry bud :-( it was very good though.
this time i plan to have MOAR ha ha, but anyway I shall smoke it all by myself and with friends, so the quantity is not much of a concern, I wanted to have just an approximate yield. I would NEVER sell even 1 gram off the bud i have grown myself - i would consider it a bad karma :-)
I am just eager, that is all.
 
mastacheeser

mastacheeser

2,126
263
yea for sure man good luck to ya
i think your results can only get better lol
 
T

tomsawyer

65
8
Shave those legs next time. Clean up the bottoms more. Concentrate flowering at the top. Rookie mistake is to be afraid to prune. Just do it by end of wk 2. Take of what's not going to be awesome. (takes a couple runs to know)
 
xX Kid Twist Xx

xX Kid Twist Xx

Premium Member
Supporter
3,581
263
taking a quick glance and seeing the overall health of your plants i would say u can expect 2-4 ozs as long as they stay looking as good as they do. its harder to get a number with floros for me as i have never used them. also is gonna depend on your food and how long you flower them.
 
M

Mr. Greenthum

183
0
U want to max your yield check out part of this thread
Has tips on ways to get good yield.
 
express_fix

express_fix

92
8
@Mr. Greenthum
3. LST (Low Stress Training) This is a good way to start increasing your yield if u don't quite trust yourself with topping or super cropping your plants.The key to LST is to create a horizontal plane of buds so that they all get the same light and grow at the same rate. You end up with a bush of many colas instead of the traditional Christmas tree bud plant with one main cola.
Thanks for the tip. I did that :)

@xX Kid Twist Xx
Total CFL Watts - 125W
Total HPS Watts - 250W
My main light source is a HPS 250W. The CFLs come as a supplement lighting; 3 CFLs 25 W each and one bigger CFL rated at 50 W.
 
Rushoe

Rushoe

990
43
250 is more then enough lite if it's just for you my 1st run in door was a CJ vegged for 2 months with florescent(house hold one's) and flowered with a 250 I got 6.5 zips in soil I was not expecting that much for sure....One dude on here I think did 14 zips with the white so I guess it all depends on how you have your set up. I had my lite at about 5-8'' from the canopy I would not do this unless your lite is air cooled I had mine ghetto rigged and attached a small 6'' fan blowing right at the bulb. So I it has more to do with you environment rather then supper cropping and lst ect....Although that plays a big role as well

This was was the cj I did I while back vegged in 1 gallon of coco for two months and flowered in 3gallons of roots organics soil....6.5 was more then enough for me!!! Good luck with your grow....
 
Cj
express_fix

express_fix

92
8
⇧ wow! that pic is off the hook! ↑

http://img145.invalid.com/img145/8339/canopytopsbent.gif

i bent the tops and this is how it turned out.
edit my HPS ballast is outside the cabinet in order to reduce heat spread.
My HPS is also "ghetto air cooled" by a 120 MM fan pointed directly at the bulb. No cool tube though.

The Fan is rated at 90 CFM Air Flow i am running it at 7 V so i get less noise pollution and a lil bit lower CFM.
 
Rushoe

Rushoe

990
43
⇧ wow! that pic is off the hook! ↑

http://img145.invalid.com/img145/8339/canopytopsbent.gif

i bent the tops and this is how it turned out.
edit my HPS ballast is outside the cabinet in order to reduce heat spread.
My HPS is also "ghetto air cooled" by a 120 MM fan pointed directly at the bulb. No cool tube though.

The Fan is rated at 90 CFM Air Flow i am running it at 7 V so i get less noise pollution and a lil bit lower CFM.

I think if you can put your hand at the top of an EVEN canopy with no heat well tolerable at least.You should do just fine.From the 3rd week u should really be able to tell whats not getting good lite on the lower branches so you can take all that off cuz they just wont develop as well and it helps to make bigger top colas
 
express_fix

express_fix

92
8
currently i have no heat issues at all, even VERY close (5 - 10 cm) to the HPS i can not feel any intolerable heat. hmm i can hardly feel any heat at all, except at VERY close distance (almost touching it)
and the plants are at least 25-30 cm away from it.
i guess because its winter and my room temperature is not very high 20 - 25 degrees.
 
Melvan

Melvan

248
18
Rule of thumb on lighting

I have to give this to you in American measurements, I hope you can convert it to metric.

You need 3000 lumens per square foot for vegging, 5000 per square foot for flower. You need 50 watts per square foot.

For example: If you have a 12 square foot room you need 60,000 lumens and 600 watts. One 600w hps system with a Hortilux bulb that puts out 88,000 lumens would give more than that sized space would need.

Measure your space, check it against your available lumens and watts, if you're not meeting the above requirements you are under lit.

Your original question was about lighting correct?

Edited to add that your plants look beautiful, I don't think you are under lit and I don't see any heat issues. You're doing an excellent job, keep up the good work.
 
H

-hydrofarmer-

113
0
I believe that it depends on the farmer and his techniques.
 
TheCoolestMan

TheCoolestMan

Premium Member
Supporter
1,840
113
Hey Express nice grow for the 2nd try bro, plants looks nice. I think u soon figure out how to increase ur average yield. Keep up the work...
 
express_fix

express_fix

92
8
week 6 in flowering. 2 more weeks to go. took some pics. the Herijuana x Big White is literally exploding!

Top Colas - at the Left Uberkush at the right - HeriXBigWhite
http://img189.invalid.com/img189/7405/tops1v.jpg
http://img819.invalid.com/img819/9334/img0381b.jpg

HerijuanaXBigWhite Trichomes closeup

http://img684.invalid.com/img684/5041/herixbigwhitetrich.jpg

Uberkush closeup

http://img64.invalid.com/img64/3364/ubertrich.jpg


HerijuanaXBigWhite
http://img834.invalid.com/img834/7705/herijuanaxbigwhite.jpg


Uberkush
http://img163.invalid.com/img163/4452/ubertop.jpg


BigWhiteXHerijuana Canopy
http://img814.invalid.com/img814/9325/img0380k.jpg
http://img819.invalid.com/img819/8913/img0382tv.jpg


Uberkush canopy
http://img193.invalid.com/img193/6971/ubercanopy.jpg
http://img87.invalid.com/img87/4017/ubercanopy2.jpg


Uberkush bud
http://img51.invalid.com/img51/2350/img0384dh.jpg

Lights setup
http://img11.invalid.com/img11/5869/img0383yh.jpg
250 HPS 26000 Lumens
70 W HPS 6000 Lumens
120 W CFL 6000 Lumens

Total ~ 38 000 Lumens
 
N

norcalshan

23
0
On my second indoor here. First one was about 4 grams a plant. This round is going MUCH better. Your plants look great !!
 
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