VerdantGreen's Quarters - 187 watt LED - Organic Modular ScrOG

[VerdantGreen]

PetFlora - thanks for stopping by, i have also heard that far red will increase tric production, but afaik it will have this effect when used during the day period too . am i right in saying that using far red at night on a short day plant like cannabis will also speed up the flowering response?
the spectrum of these lights has quite a bit of far red which already makes flowering a bit quicker and is perhaps one of the reasons why i think the quality is better. tbh i wouldnt want to speed up flowering any more as i guess there is a balance between shortening the flower time and lowering yield.
i find the whole red/far red phytochrome response interesting but confusing

ixnay, yep, i'll just cowboy up to those gnats

nickman - i know what you mean!

GP - thanks for checking in. i'll have the figures next week

heady and growbag. i now have some neemseed meal on the way, big thanks to growbag for the heads up on a UK supplier...
what rate do you use it at ?? most of my amendments like dolomite i use about 5g / litre of soil - does that sound about right?
growbag im sure it would be ok to post the link

VG

 

[GrowbagUK]

I used about 2g/litre - seems to be effective at this level.
NPK etc listed here.
http://www.thenaturalgardener.co.uk/neem_natural_fertilizer.php

 

[heady blunts]

heady and growbag. i now have some neemseed meal on the way, big thanks to growbag for the heads up on a UK supplier...
what rate do you use it at ?? most of my amendments like dolomite i use about 5g / litre of soil - does that sound about right?
growbag im sure it would be ok to post the link

VG

i get down to earth neem seed meal and the recommendation on the package is 1/4 -- 1/2 lb per cubic foot, or 6 -- 12 lb per cubic yard.

i'm using 7 or 8 lbs for my mix this summer (around a yard).

 

[PetFlora]

I have made a study of lighting. Fascinating, and confusing for awhile. Much, if not most, I learned from others whom I believe have implemented the techniques they espouse.

I am told that ~ one hour of IR AFTER lights out is best. Uvb is beneficial throughout during lights on.

Far Red accelerates root growth which is important to rapid leaf/stem development

 

[VerdantGreen]

heady and growbag - thanks for that!, i dont really need it as a major fert so i reckon 2g/l is a good place to start. thats the rate i tend to use for 'background' or secondary ferts.

Petflora - i checked it out and IR at the start of the dark period will speed up the flowering response in short day plants. it makes the plant think it has had an extra couple of hours darkness. its hard to find much on IR in the dark period effecting tric production but i remember HGL telling me that there was an easily visible increase in trics when they tested higher daytime IR levels for their 3rd generation spectrum.. so i think the far red will help certainly during the day period.

VG

 

[mellow yellow]

buds look really nice m8, been a interesting grow - thanks for the show

 

[VerdantGreen]

thanks my!

i should be able to post the dry weights tomorrow - just want to leave it another day to make sure it is properly dry.

but i have the approx seed yields from the S1's and fem crosses - whoop!

ChemD x Bubba Kush (fem) = 50 seeds
ChemD x Sharksbreath (fem) = 60 seeds
Sharksbreath x Bubba Kush = 150 !! this was the cross that i was most interested in too
MMG x Sharsbreath = 20 seeds

Sharksbreath S1 = 120 seeds

really pleased about this - i feel i have my favorite mums backed up somewhat now

VG

 

[yosun]

thanks my!

i should be able to post the dry weights tomorrow - just want to leave it another day to make sure it is properly dry.


VG

lol,i have been refreshing this page all day,i'm about to pull the trigger on a light,this one is more then i wanna spend,but your grow inspires me,o,let me refresh again,lol

 

[VerdantGreen]

hey yosun, thanks for the enthusiasm, i think the light is great - especially if you have enough height to get 18" or so between plants and screen in order for the footprint to spread. fo sho these LED's are expensive and it seems that the ones that work best are not the cheapest ones!

im not quite happy to post the dry weights yet because i want to leave them another day or two to make sure they are fully dry, its been very wet round here and things are taking a bit longer. very nearly there though and im pretty sure i will just about reach or beat the 8oz total yield for the grow that was my target - which would be great especially considering how many seeds i also made.

VG

 

[supermanlives]

looking good . i would smoke any of it. you guys are doing some great stuff with led.someday i will join the club but. i havent even got my blumats from 8 months ago setup. i will be interested in your yield.

 

[yosun]

thanks for the reply,this light is my dream light, a friend is getting a blackstar 240,gonna have him order 2,1 for me,hopefully it will be half as good as yours,which would be an improvement over cfl's,keep saving fo the 126,or 84xpro to add to it

 

[VerdantGreen]

supermanlives - thanks for stopping by

yosun - good luck with it. im certain that any half decent LED will p1ss all over cfl's so i think you'll enjoy it. and if you get a bigger/better lamp in the future then the blackstar will rock for veg.

---

right i have the dry weights.....

C4D = 61 grams
shark1 = 60.5 g
chem D = 59 g

and the mmg i posted a while back was 46 g

so we have a total of 226.5g which is about 8.1 oz, just exceeding my personal target of 8 oz
and working out at 1.21 grams per watt (this includes the power used by the fans in the LED fixture too)

so im happy with this, although i feel there is still plenty of room for improvement from the setup as i refine it

i'll post some smoke reports and maybe a pic or two of some dry nugs at some point soon... and i'll tell you about the next run which is just getting underway

VG

 

[pranoman]

Congrats on nice harvest VG
Your result must be in GP73LPC's gpw thread

 

[GP73LPC]

You result must be in GP73LPC's gpw thread

not yet, but it will be

 

[GP73LPC]

nice work VG

 

[delic]

As always, loving you work VG

-delic

 

[yosun]

beautiful,i'm inspired

 

[2000pm]

Righteous haul man! So inspirational.

Have you grown out more tops/smaller colas before? How did you arrive at the apprx number of tops that you grow and what kind of results were you getting with more/less?

 

[VerdantGreen]

GP, delic, yosun - thanks for the kind words

2000pm, i aim for 12-16 tops/colas per plant, but really its the way that the plant grows that will dictate this as much as myself. every scrog is different really and its a case of seeing what the plant is doing and guiding it to fill the screen etc. its one of those wierd things that when you think about it, its hard to try and explain, but there is an element of 'communing' with you plants that is quite rewarding... often i get no time with my plants to do much but all you really need is 2 or 3 sessions per plant during stretch to sort out the scrog canopy.
one thing that is worth mentioning in scrog skills is the difference between vegging the plant with and without the screen. i actually prefer to veg the plant normally up to a decent size, making sure through topping or lst or genetics that you have 4-6 strong growing branches. letting the plant grow normally means that usually the branch will get longer without the sideshoots growing too much. once you fit the screen and make the branches horizontal the sideshoots will usually start to grow pretty quickly and this can get messy if they are on the screen too long before they top out (bud up and stop stretching).
if you fit the screen fairly late so that it is instantly 60-70% full, then the sideshoots should grow just enough at thesame time as the main shoots elongate enough to finish filling the screen and you get a nice even canopy.
so if you want the tips to grow to fill the edges of the screen, dont tuck them under for a while - let them grow as dominant shoots above the screen and this way they will get most of the growth at the expense of the sideshoots. conversely if the screen is full and you want the plant to start growing its sideshoots/secondary shoots then keep the tips well tucked and this will neutralise the auxin production in the tips and encourage the sideshoots to grow.

hope that makes some sense

VG

 

[de145]

Interesting V.G., a couple of questions:
They look tricky to water, how did you water them? From the top with a watering can of some kind or take them out and dunk them or..? How could you tell when they were sufficiently watered?

I have a similar cabinet and goals as you do and am interested: What is your verdict? HID or LED?


I use a mass of CFL's right now and have never used HID lights but seeing them so far away from the lights just rubbed me the wrong way the whole time even though I'm sure you were doing what you were supposed to. It just is so ingrained in me that the canopy should be as close as humanly possible to the lighting. Is this a normal LED thing or just due to the lenses on the types you used?

I tried some cheap led's for vegging a few years ago and they were pathetic but they were nothing remotely like what you are using there, do you think we've started to reach the viable age of LED's now?