The 12-12 From Seed Thread

Endur0xX

Well-Known Member
sounds and looks good from your video the last picture was a beast...gonna have to try it out and maybe the led lights aswell lol, but i can only find regular seeds, is that what you used?
yes I only use reg seeds now ... gotta keep the gene pool alive people!!
 

tick tack toe

Well-Known Member
hey guys, it's my first time doing a 12/12 grow on reg seeds. Normally I have been using fem seeds but I wanted to give big bomb a go.

Anyway I am 3 weeks in and I think I might have a male. What do you guys think? It is taller than the other 3 ... and well take a look at the pictures.
 

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qwe1233

Member
hey guys, it's my first time doing a 12/12 grow on reg seeds. Normally I have been using fem seeds but I wanted to give big bomb a go.

Anyway I am 3 weeks in and I think I might have a male. What do you guys think? It is taller than the other 3 ... and well take a look at the pictures.

def a male. It's got enough pollen sacks to feed an army
 

nameno

Well-Known Member
Listening to you people that grow in soil a larger pot will help yield more,how 'bout in hydro,does this hold true?
 

12/12 jack

Active Member
Just a quick question about humidity lads... I have a 12" extraction and an extra 8" running full blast... Must change air in room every 2 minutes or so, 2 dehumidifiers running 24/7... Oscillating fans and a passive intake.
During daytime I'm struggling to keep humidity below 60 but at night it drops to 45-50.
I'm 3 weeks into flower and have no way of lowering further... Do you think my babies should be ok?? I know mould is more likely to develope at night and luckily I'm within the safe range when lights are off.
 

Endur0xX

Well-Known Member
usually humidity is higher when lights are off... another thing is you say air exchange every 2 minutes? I keep my fans running 24-7... I think your fans won't last as long if they keep going on and off every 2 minutes. Running them 24-7 would lower RH, what air do you use for your intake?

If you flirt with 60% RH, that's enough for bud rot buddy so if your buds get as big as beer cans you will have something to be worry about.

There is always a way to lower your RH, if you are serious about growing, you HAVE to get the environment dialled in. I use air from upstairs in the house, I have a cold room and I run the dehum in that room. I run LEDs though...
 

12/12 jack

Active Member
usually humidity is higher when lights are off... another thing is you say air exchange every 2 minutes? I keep my fans running 24-7... I think your fans won't last as long if they keep going on and off every 2 minutes. Running them 24-7 would lower RH, what air do you use for your intake?

If you flirt with 60% RH, that's enough for bud rot buddy so if your buds get as big as beer cans you will have something to be worry about.

There is always a way to lower your RH, if you are serious about growing, you HAVE to get the environment dialled in. I use air from upstairs in the house, I have a cold room and I run the dehum in that room. I run LEDs though...
Yeah I know it's usually higher on lights off but for some reason it's not with me!!
Maybe I didnt make it clear about the fans... They are running 24/7... I meant the amount of extraction will empty the growing space every 2 mins and replace with fresh air.
My intake is passive... I grow in basement and leave the back door slightly open (securely!!) to allow fresh air in from outside which gets sucked down the stairs.
Is night time humidity more dangerous than day time humidity?? Surely mould and bud rot usually happens at night time??
 

12/12 jack

Active Member
Also does the fact that I have so much air movement reduce the possibility of bud rot setting in?? It's not like the air ever has a chance to settle or get stagnant and stale...like I say my extraction replaces all the air in the room approximately every 2 minutes and the oscillating fans are in 24/7 as well...
 

Endur0xX

Well-Known Member
that's what I thought, with enough air movement it won't happen, but about 1 month ish ago I had to deal with bud rot for the first time. Only advice for you is if you have some massive buds and they have massive leaves, dont try to remove the fan leaves by pulling them, cut them with scissor away from the bud instead. I try to remove a few fan leaves that were shading lower growth and I actually hurt the plant inside the bud and I am guessing it started bleeding, it got moist inside the bud and started rotting . I have since added a dehum and more air flow but I gotta say I thought there was no way I would get mold and I did. high 50's is risky business.

Both plants I ever had to deal with rot, it was in the main cola about a week after I had pulled the fan leaves off (on purpose to remove them), it could have been coincidence but the rot started exactly where those fan leaves were.

Also, when the buds are big, every day give a gentle pull on the fan leaves to make sure they are tight in there, if the leaves comes off easily and you didnt mean to take it off the plant, that's trouble, you MUST take the plant outside of the grow room to inspect it, if you inspect in the grow room especially with the fans on, you will spread the spores all over your healthy plants, you dont want that :eyesmoke:

Anyway I dont mean to scare you but just to be on the safe side.
 

12/12 jack

Active Member
that's what I thought, with enough air movement it won't happen, but about 1 month ish ago I had to deal with bud rot for the first time. Only advice for you is if you have some massive buds and they have massive leaves, dont try to remove the fan leaves by pulling them, cut them with scissor away from the bud instead. I try to remove a few fan leaves that were shading lower growth and I actually hurt the plant inside the bud and I am guessing it started bleeding, it got moist inside the bud and started rotting . I have since added a dehum and more air flow but I gotta say I thought there was no way I would get mold and I did. high 50's is risky business.

Both plants I ever had to deal with rot, it was in the main cola about a week after I had pulled the fan leaves off (on purpose to remove them), it could have been coincidence but the rot started exactly where those fan leaves were.

Also, when the buds are big, every day give a gentle pull on the fan leaves to make sure they are tight in there, if the leaves comes off easily and you didnt mean to take it off the plant, that's trouble, you MUST take the plant outside of the grow room to inspect it, if you inspect in the grow room especially with the fans on, you will spread the spores all over your healthy plants, you dont want that :eyesmoke:

Anyway I dont mean to scare you but just to be on the safe side.
Thanks for the advice. I don't think I will be removing any leaves anyway. I shall inspect the leaves every day when feeding and give them a little tug.
some of my colas are about the size of a 500ml coke bottle already!! And I'm only 6 weeks from seed today. So it looks like they are going to get big! I would be devastated if I lost them to rot.
So do you think that high humidity is more dangerous at night?? Due to the spores liking a dark damp place to settle?? As my humidity is in the 40s at night.
Even with my humidity issues i never have any condensation anywhere... I'm growing in a 3m square tent.
I also have an ozone generator which I have never used as yet... I have read that a small amount of ozone also deters fungus and mould?? Do you know anything about whether that is true?? I know too much can be dangerous for the plants and my own health so I don't really want to use it unless I have to.
I really appreciate your help and advice
 

Endur0xX

Well-Known Member
I dont know anything about ozone generator, I try to keep my meds very clean so, personally I wouldnt risk it but I dont know anything about it.

I think your first step would be to take another look at your setup, and double check everything and make sure there is absolutely nothing you can do to improve RH.

I dont know where you live but I am on the rain Coast, and I keep RH in the house below 50 and my basement at 40. If you use air from outside with HIDs, maybe you could get a bigger fan and not use cool tubes...that would be an option if you have cool tubes with your bulbs.

When I first started growing I used 2 x 400watt hps with air from outside on lights on and the bulbs would keep the room very dry and the basement nice and warm. However, I had high RH at light off ... but I didnt really know what I was doing and the buds weren't that big, I got lucky too. Since going with LEDs I simply use air from upstairs in the house and all is good.

It's weird that your RH is lower at night (are your lights on at night?) Do you do something different when the lights are on and off like closing the basement door?

You could use 2 small inline fans, one that uses the air from outside for the lights with cool tubes and one that brings in the fresh air for the plants from upstairs in your house.

Anyway I am sure there is a lot you could do... it's costly to get set properly but it's well worth it.
 

12/12 jack

Active Member
I dont know anything about ozone generator, I try to keep my meds very clean so, personally I wouldnt risk it but I dont know anything about it.

I think your first step would be to take another look at your setup, and double check everything and make sure there is absolutely nothing you can do to improve RH.

I dont know where you live but I am on the rain Coast, and I keep RH in the house below 50 and my basement at 40. If you use air from outside with HIDs, maybe you could get a bigger fan and not use cool tubes...that would be an option if you have cool tubes with your bulbs.

When I first started growing I used 2 x 400watt hps with air from outside on lights on and the bulbs would keep the room very dry and the basement nice and warm. However, I had high RH at light off ... but I didnt really know what I was doing and the buds weren't that big, I got lucky too. Since going with LEDs I simply use air from upstairs in the house and all is good.

It's weird that your RH is lower at night (are your lights on at night?) Do you do something different when the lights are on and off like closing the basement door?

You could use 2 small inline fans, one that uses the air from outside for the lights with cool tubes and one that brings in the fresh air for the plants from upstairs in your house.

Anyway I am sure there is a lot you could do... it's costly to get set properly but it's well worth it.
I'm not using cool tubes.. I have vertically hanging bulbs in parabolic reflectors.
There is nothing I do differently at night.. (I run my lights during the day).. Apart from turn the extraction down!!! Which you would think would raise humidity even more! It drops a good 15% throughout the night. From 60 to 45ish.
My temps are obviously lower at night as well... Another thing that should increase humidity!! This is all very strange... I have about 5 humidity/temp monitors in my tent so they can't all be faulty.
I know humidity problems happen at night for most people... And the more I think about it it seems so strange that my humidity is higher when the lights are on.
 

Serial Violator

Well-Known Member
that's what I thought, with enough air movement it won't happen, but about 1 month ish ago I had to deal with bud rot for the first time. Only advice for you is if you have some massive buds and they have massive leaves, dont try to remove the fan leaves by pulling them, cut them with scissor away from the bud instead. I try to remove a few fan leaves that were shading lower growth and I actually hurt the plant inside the bud and I am guessing it started bleeding, it got moist inside the bud and started rotting . I have since added a dehum and more air flow but I gotta say I thought there was no way I would get mold and I did. high 50's is risky business.

Both plants I ever had to deal with rot, it was in the main cola about a week after I had pulled the fan leaves off (on purpose to remove them), it could have been coincidence but the rot started exactly where those fan leaves were.

Also, when the buds are big, every day give a gentle pull on the fan leaves to make sure they are tight in there, if the leaves comes off easily and you didnt mean to take it off the plant, that's trouble, you MUST take the plant outside of the grow room to inspect it, if you inspect in the grow room especially with the fans on, you will spread the spores all over your healthy plants, you dont want that :eyesmoke:

Anyway I dont mean to scare you but just to be on the safe side.
I have had the same problem on my last 2 grows where the main cola on a couple of plants have had bud rot. I put it down to the fact that i had pulled off a few old dying leaves off but not quite got all of it and its died off and then thats what started off the rot because there's a bit still inside bud
 

Comacus

Well-Known Member
I have also heard if one does trim the fan leaves to do so outside the bud so the wound will heal and not put moisture down in the cola.

On a different subject, has anyone tried using Subcool's super soil mix on the 12/12 plan? If so, what amounts of Super Soil did you use in the pots. I suspect something less than the 1/3 to 1/2 of pot volume due to the shorter number of weeks in the soils.

Attached is a photo of a Cali Connection Mix Pack done on 12/12 as a fill in plant while flowering some others.Cali Conn 9 w 2.jpgCali Conn Main A.jpg
 

xp0c

Well-Known Member
Here's a couple more pics of my 12/12 FS. She still got around 5 weeks left, and she's getting pretty frosty.
IMG_2012.jpgIMG_2013.jpgIMG_2014.jpg
 

HiloReign

Well-Known Member
You may want to look for mold/pests where the yellowing leaves are. Not implying you have something wrong, it is a possibility though.
 
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