First Grow - Big Bang 2 - 600w - 4 x 4 Tent - Co2

RobbieP

RobbieP

Well-Known Member
Hi man , hope you dont mind if i pull up a chair n watch this one progress :)

To me those issues look like it could be 2 possible things ... nute burn or heat burn ...
If you can move your thermometer to plant level and see what reading you get and let me know it would help also dont bother with a slurry mix to test ph ... Measure what it is before you feed then just measure the run off after and see what you get , you might have a lock out for some reason and thats causing a overflow of certain nutes causing a burn .... also are the areas affected just the lower older leaves or is it new growth aswell ?

just some things to start with ... dont worry too much man we will get it sorted !
 
KrAzEo

KrAzEo

Well-Known Member
RobbieP said:
Hi man , hope you dont mind if i pull up a chair n watch this one progress :)

To me those issues look like it could be 2 possible things ... nute burn or heat burn ...
If you can move your thermometer to plant level and see what reading you get and let me know it would help also dont bother with a slurry mix to test ph ... Measure what it is before you feed then just measure the run off after and see what you get , you might have a lock out for some reason and thats causing a overflow of certain nutes causing a burn .... also are the areas affected just the lower older leaves or is it new growth aswell ?

just some things to start with ... dont worry too much man we will get it sorted !
Click to expand...

Don't mind at all man!!:-o

I have been checking heat around the tent recently. If I stick the thermometer on the outside of the reflector (reflector is pretty cool from being air-cooled) it reads a high throughout the cycle of about 84-90F. I am using Co2 though and it is recommended that I keep plants around 90F but NEVER allow to go above 95F. Where the plant tops are (10" from reflector) the temps usually read about 86-91F.

I feed with RO water so it should be 7 ph I would guess but I'll check tonight and get back to you on that. I'll also check the runoff and post those results as well.

The older leaves are affected the worst. The new growth doesn't seem to be affected except for on the TNT Kush the new growth seemed to be smaller than usual with some dead tips and slower growth at those tips.

It has been in FFOF for roughly 3 weeks before I gave it a 25% strength dose of Pura Vida on the 20th - and then a 50% dose on the 23rd. They dry out almost completely in a day and are watered daily. With feeding every third water does it seem like a lot? Leaves were kinda crappy like this before the first feeding but I really cant tell if its gotten better or worse (or a different kind of crappy) since then because the size and structure of the plants change so quickly.

You think I should just flush to be safe? My ph was really worrying me for awhile too.

Thanks for your help Robbie!:bigjoint:
 
RobbieP

RobbieP

Well-Known Member
flushing wont cause any damage man so go ahead and flush but id flush 10x the size of the pot so 10ltr for a 1ltr pot , id try and flush 1ltr at a time and test the run off each time trying to lower it every 1ltr to get it where you want it to be .... not sure if your in USA or UK or somewhere else but i think the conversion if you use gallons is about 4.5ltr = 1gallon ...

Also i just read the post where you thought you might have mold , mold is abit uncommon indoors but not completly unknown , most common on outdoor cannabis , as far as im aware there are 2 types of mold that attack cannabis plants , Septoria cannabis and S.neocannabina , both cause yellow, white or greyish brown spots and start on the lower leaves , but septoria cannabis is the most common of the two ... if you dont keep it in check it can also attack the stem of your plants .....

heres some info i found on how to combat the fungus

Hemp Diseases

Yellow leaf spot - Septoria cannabis



Septoria is hopping from species to species like the Mosaic virus. But Septoria can be dealt with.

To manage this disease, remove the infected leaves to reduce inoculum levels (burn them). Because leaf moisture is essential for infection to occur, increase air circulation around the foliage by properly spacing plants (and removing volunteer seedlings) to prevent over-crowding. As with other foliar disease problems, avoid overhead watering. Fungicides containing chlorothalonil or copper* may protect new growth and reduce the spread of the disease. Preventative applications of fungicides should begin in early to mid June prior to the onset of symptoms.


Immunox, which is now sold as Spectracide would work, but I personally would be reluctant to use it. I use sulfer or copper spray, and I trim until it hurts. Every single affected leaf needs to be removed, and you need to remove all of your bottom branches to create a good air flow. Make sure that you also mulch really good, because splashing soil from rains is a vector for disease.

Spray religiously every 7 days until you see improvement, then switch over to neem oil when you get a handle on the disease. sulfur will make your buds taste horrible, so you need to switch to neem oil asap.

At the end of the day its gotta be worth a shot man !
 
KrAzEo

KrAzEo

Well-Known Member
Thanks for the advice man! I have been using GreenCure http://www.greencure.net/what_is_greencure.asp and I am pretty sure the fungus/possible mold has stopped though. I will look again tonight for sure, and very closely. There are some very old leaves that seem like they have that disease. I will definitely make sure to keep spraying daily.:-P
 
RobbieP

RobbieP

Well-Known Member
well i gotta give it ya , your the 1st american to come into the uk thread and not get absolutly ripped to pieces !!!!! you even got a like !!! LOL
 
mikeandnaomi

mikeandnaomi

Well-Known Member
Your over feeding them plants.
KrAzEo said:
August 24 - Day 31. Flowering Day 8


Humidity/Fungus


All in check. Installed a dehumidifier..at first temps were too high so I constructed a box to go over the heat output of the dehumidifier with a hole cut in it for a 6 inch duct. WORKS GREAT!
Fungus is completely gone!!:-P


PH

Despite my previous mistakes of using baking soda, etc, the ph is holding well at about 6.8 :-o


Clones

I took two more clones - one more big bang #2 and one more TNT Kush. The original clones had started rooting well :-P:-P and my Jamaican Dream I already have planted in soil.
View attachment 2308311View attachment 2308312View attachment 2308313


CAN I use FFOF for clones or is it too hot nutrient speaking??


Despite all this seemingly great news, it seems there are still some problems present. Here are some pics:

View attachment 2308314View attachment 2308316View attachment 2308317View attachment 2308318View attachment 2308319
View attachment 2308320View attachment 2308322


Entire crop:

View attachment 2308323


Jamaican Dream

View attachment 2308327View attachment 2308326

View attachment 2308328View attachment 2308330 ---Weird phenomenon??


TNT Kush

View attachment 2308333View attachment 2308334View attachment 2308335


The TNT Kush, the best Big Bang 2, and the Jamaican Dream (in that order)
View attachment 2308336


Any ideas on what is causing the problems shown in pictures? The plants have twice been given an Epsom salt solution at 1 Tbl/gal RO h2o...divided between the ten. I did this because I felt there was a magnesium deficiency (some purple stems and such).

Does anyone think it is a few different probs?
A salt build up?

Do they just look hungry to anyone? The ten drink a gallon per day. On August 20 I gave them a 25% strength dose of Pura Vida Bloom 2-6-6. On August 23 I gave them a 50% dose. Tomorrow my plan is to gove them a 75% dose.

Should I flush today and give them a final gallon divided over them with 50-75% nutes? Or should I just continue as planned, giving them the nutes tomorrow?

Peace!:bigjoint:
Click to expand...
 
SOMEBEECH

SOMEBEECH

Well-Known Member
Agree with the Nute burn of the leaves.I also use FFOF And have to water alot but im using Smart Pots best pot to grow in,IMO No root curling and self prunes the roots with awesome aieration for the root system.
BEECH
 
KrAzEo

KrAzEo

Well-Known Member
Alright, so last night I gave em a good flush. 6 gallons through each plant.
About an hour later I watered them all with one gallon of ~33% strength Pura Vida distributed over all ten, which would average about .4 liters/plant.

Thanks everyone for your support and advice!

Robbie, thanks for cosigning for me on the UK thread. :-D

Thanks for the compliment mikeandnaomi, there are several versions of that but that one is my favorite.
 
KrAzEo

KrAzEo

Well-Known Member
Forgot to mention:
Ph the flush was done with was 7.3
Ph of runoff after all said and done was 7.1

I would think that for my soil to pull the ph down to that, my soil must definitely be between 6.5 & 7 :-P
 
RobbieP

RobbieP

Well-Known Member
those are good readings man , as long as the PH coming out is roughly the same as PH going in then you know your soil is ok , id of flushed it with a PH of about 6.5 though to get a run off of around 6.3 ...
Cut your nutes by half and feed with that for 7 - 10 days then slowly build the nutes back up again , the nutes in your soil might still be active so no need to give them so much in there feed :)
 
Jaza

Jaza

Well-Known Member
I'm actually surprised how many people are growing Big Bang now. Cant wait to harvest my Big Bombs :)
 
KrAzEo

KrAzEo

Well-Known Member
Apologies for the delayed response. The plants are doing MUCH better!! :-)
The yellow is turning green and the leaves look healthier overall. The plants are now growing about an inch or more per day.
So yes they are picking up!! Thanks for the confidence to proceed with the flush..it made a very big difference. Lesson learnt :-)

I will post more pictures this afternoon or tomorrow.
 
RobbieP

RobbieP

Well-Known Member
KrAzEo said:
Apologies for the delayed response. The plants are doing MUCH better!! :-)
The yellow is turning green and the leaves look healthier overall. The plants are now growing about an inch or more per day.
So yes they are picking up!! Thanks for the confidence to proceed with the flush..it made a very big difference. Lesson learnt :-)

I will post more pictures this afternoon or tomorrow.
Click to expand...
Told ya we would sort it lol :)
 
SOMEBEECH

SOMEBEECH

Well-Known Member
Very nice recovery and loads of Trics.
Gonna be a very potent plant imo.
Good luck with the flower.
BEECH
 
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