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Get Help for Cannabis Plants Problems as Quickly as Possible!

hello.
i'm growing near windows. less than 12 hours of sun per day, but it has been going fine.
it seems to have just revealed its femininity.
the problem started some weeks ago. yellowing flowers which will eventually fall. more completely so in the lower branches, but the upper leaves, including the new ones, are getting kinda burned on the thips, with bad shapes.
i'll try to capture it in the pictures.
what is it?

thank you!
 
This isn't urgent, just wanted to make sure everything is fine. Quick summary of what was done and photo below. Maybe it's ok, but I am not really seeing progress in 2 days.

Seeds planted 10pm Wed night. Started popping up friday morning. Away all day and 11pm Sat they have completely sprouted.

(11pm Sat) Stop using the 2 20w t12s over germination station, remove the top and put 40w (actual power draw) sansi led 24" above. By Sunday night it doesn't seem to be growing more than the 2nd set of leaves which have been there.

(10pm Sun.) Examine each fabric pouch, notice a root coming thru and put this into containers with foxfarm happy frog (light at 18"). Today they still look almost the same as saturday night, perhaps a little more pronounced and upright on the 2 shorter seedlings, but no new leaves.

Optic 1 3500k arrived today. They say use it at 30" for seedlings and wow this thing is ridiculous. It's like a gigantic spotlight, even from 48" it's far more powerful than what they are under now at 18". I have been reading thru the articles on here and kind of think everything is fine, I just thought it would grow more within 2 days.

http://imgur.com/gallery/QspcWmm

Ignore the very small seedling, it came from a double. The tall seedling had a very small one right next to it and carefully split them.
 
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Hi MmmHmm, I read or imagined that a cannabis seedling is like a big choo choo train. She starts off slow, but when she gets a lil bigger, she picks up steam and you'll see daily growth. Just be patient, don't over-water but keep those roots emerging, and she'll take off. All you have to do is worship her.
 
2 things you could have to hot a soil and or you have to hard a soil you need to put something like perlite in it so it can breath , that pot looks like a 1 gallon to me if that is so it could be root bound ,that would account for the stunted growth and maybe the dead leafs . If I just saw the brown leaf and didn't know anything else I would sy it was a N deficiency , what kind of soil are you using , you have 2 issues burnt tips and dead or dieing leafs .Alltatup is correct you should post this on main forum and see what others say
 
Thanks, just curious how hot that 400w cob led gets? My 54w optic 1 cob is at 120f .5" from center of dome lid. It does seem to drop off quickly at 90f roughly 4 inches away and ambient room temp @ 10-12"

This closest was originally a temp spot, but seeing how well the light covers it I'm leaning towards doing 2 or 3 in here, it's 36-40 × 60-66 x 96.
 
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My lights are supposed to make the interior of the box 4 degrees F higher than the room which stays around 73 degrees. I leave the doors open during the hottest time of year.
 
NEED URGENT HELP - LEAVES ARE GETTING YELLOW AND DARK SPLOTCHES APPEAR

Hi guys,

It's my first grow, so take it easy please

It's been almost 35 days into flowering since 12/12 switch

Problems started to appear about 8-10 ago

I will try to give as much information as possible:

0,6x0,6 (m) grow tent
250w HPS with cooltube, active cooling

Soil in smart bag-pot
Watering once in 2-3 days
PH of water always tested - within average limits of 6-7
Keeping it at 50% humidity now, temperature 24-27c during the light phase, 21-23 during the night phase

Was not adding much of nutrients during the vegetative stage, it was feeling perfectly fine just very occasional (GHE Flora Bloom and Micro)

Almost avoided additional Phosphorus nutrition (as it was looking good), added just 1/4 of recommended dose one time 2 weeks after switch (GHE Flora Bloom)

2 days ago started to add more of GHE Flora Bloom as advised per manufacturer (I know it is General Hydroponics so might not the right choice for the soil, but had no other option)

To me it looks like Phosphorus deficiency - stems became to turn purple/red, leaves acting abnormal, even new once near the buds. Tips appear burnt, leaves are curling and yellowing both top and bottom, also these ugly spots appear

PLEASE HELP!!!

here are the pics (sorry just can't figure out how to implement imgur links here):


Is it too bad? Will it make it through the flowering?
 

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alltatup Sorry it took me so long to reply.
Latest pictures from this morning: https://1drv.ms/f/s!Aps8-R3C8-tLmjWU8qKO-U4FwlZN (bud pic is from the plant on the left)

Thanks to your reply I finally understood the basic of nutrients, and because of that my ladies got over their problems, and are looking as healthy as ever. Each one of them has a specific nutrient plan based on how they behaved previously. The one on the left had phosphorus problems, so I flushed it and gave it half the nutrients with additional Phosphorus dose. Seems to be loving life from that point onward. Which brings me to the plant on the right (the one I needed help with); I followed your advice, and now she's loving life and growing stronger day by day, thank you for that! Just like you said, each strain is different, and this one seems to be really delicate.
The plant in the back was supposed to be an auto just like the other two, but it seems my seed bank fucked up and I got a regular photo, which is good, since I can have some fun with her.
But, lessons learned. In the back there's Gorrilla Glue Auto and Auto AK, and I'll do my best to grow them beautiful and strong.

Just like you said it brother! I approach my plants with much love, talk to them all the time and sometimes when I'm in a mood I sing while taking care of them! I believe it makes them happy, and it makes me happy that I can contribute more to their life than just watering and training them :)
Thank you for your advice and time, grow strong my friend! I will post final results after harvesting with full grow history, just to prove that growing is really easy, and even when you make a shit ton of mistakes, your plant will reward you with ... magic :D
 
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Any ideas what might be causing this? These two plants are growing significantly slower than my others - the leaves seem to be discolored slightly yellow in various places. Checked under the leaves but saw no obvious signs of pests. I am using RO water in fox farm soil. My thinking was it could be magnesium deficiency (due to the RO water) or possibly pests. I went ahead and gave them a very light feeding of CalMag in non RO water - I will also check runoff pH after the next watering for problems. If anybody has any other suggestions I am all ears
 

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Hi Austin, I'm not sure, kinda hard to see the plants, but are you dripping salts (i.e., nutes) on the leaves? Don't allow that to happen.
 
nope, nothing like that. only been giving them RO water with no nutes for the first few weeks (except the light feeding of calmag I just gave them), and definitely not on the leaves. I uploaded a more recent photo that should help you see a little better in regular light.

the plants started growing faster again after the calmag, and the new growth definitely looks better to me, but I am not sure whether or not I should also give them some neem oil to be on the safe side in case this actually is pests. last thing I want is this to spread to my other healthy plants if I put them back in the tent.
 
Thanks for posting the green pic. I don't know what that could be, but she is definitely old enough to start getting fed. Start with very low doses of vegetation nutes for seedlings and increase gradually unless you see the leaf tips getting burned.
 
Hello everybody and happy growing!

I have been reading the website and the tutorials for quite some time now and now I have some problems with my grow and would like a little help

- NFT Hydro grow with one plant in rockwool
- now in fourth week of flowering
- ppm at the beginning of the week (Monday) 1200, dropping day after day, today was 800
- I am using the Advanced Nutrients pH Perfect Grow, Micro, Bloom Hydroponic Intermediate Growing Recipe
- water temperature from 18-21 degrees (64-70)
- using a ViparSpectra 600W LED light
- air stone in the nutrients solution
- reservoir emptied and cleaned every Monday and refilled with new solution

Two weeks ago (2nd of week of flowering) I noticed some brown spots on my lady. The spots appeared on the top fan leaves, gradually moving to the new growth but the major issue is on the biggest fan leaves that are on top of plant. I have been struggling from the first day with keeping my ph as much as possible around 5.5 but I have to correct it every single day if not twice a day. Usually by the end of the day it rises to 7 or even 7.4.
I searched a little on the website and found out that my problem could be some sort of calcium deficiency. I will add some phed water every day to see if the situation changes and the new growth grows without any problems. I am also thinking of adding some cal mag.

Could you tell me from your experience if this is calcium deficiency? Should I remove the most damaged leaves?

I have also ordered a new ph down solution from advanced hydroponics which is specifically made for plants in bloom. I know that when ppm goes down (because plants use the nutrients) the ph grows.

Should I have the same ppm value thru whole week or is it normal that goes down?

Here are the pics and thanks for your help.
 

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Help! Please. Pict 1-6 in their veggies stage, all leaves look unhealthy and some curl in, funny shape.
setup: 18h/day light 600w, Coco soil, I reused soil but first I laid outside for weeks to dry then rinsed with water, pH 6-6.5 canna A+B, cmx
 

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Help! Please. 7-11pict flower stage week 5 but buds are so small , not smell, look un healthy,
setup: 12h/day light 600w, Coco soil, I reused soil but first I laid outside for weeks to dry then rinsed with water, pH 6-6.5 canna A+B, cmx
 

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Doramomo

Please read this and supply all the information so that we can help you:

Tips for Getting the Best Answers

Please include the following in your post:

Title Quickly Explains the Problem - Examples: "Leaves are turning yellow" or "Leaves are getting spots and plant is droopy" or "Hydroponic grow, roots look brown"
Choose "HELP!" Prefix -
(Important!!!) Pictures - A picture of your problem and a picture of the plant in the setup.
Description of the Problem, and when you first noticed it. What are the symptoms? What do you think the problem might be? Did you do anything different or notice anything unusual before the problem started happening?
Your Setup - It helps to include information about the growing medium, nutrients, grow light, etc
 
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Hey guys! I have a problem, a big one actually;
https://1drv.ms/f/s!Aps8-R3C8-tLmjWU8qKO-U4FwlZN
So here are my 2 plants, both sprouted the same day, living in the same conditions since day 1. First picture shows them two weeks ago, when they where more or less the same size. 2nd one show the plant in question TODAY, and the 3rd shows them both next to each other.
So the question is; Why is she not growing? I've seen close to no progress in those 2 weeks, and the other healthy one just keeps getting bigger. Why is that? I accept that I might have to toss her, but I wanted to know your opinion before that happes.
My setup is; soil, viperspectra v450, bottled nutes, each plant is in the same pot size, each has it's own nutrient plan."
It's important to note that both plants were growing for a MONTH under a puny Aliexpress light, and didn't grow much from seed up until the point I've bought Viparspectras. So what do you think? In my opinion, as both are autoflowers, the sick plant doesn't have any lifetime remaining, and she just won't grow buds at this point. I hope any of you seen something like this before, cheers, much love from a begginer! <3
PS. Also the amount of brown hairs is disturbing?
 
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Nereids Hi there, I'm sorry but I can't see anything in those dark purple pictures. Are they both the same strains? Even if they are, you can have one plant get huge and one stay runty. It has happened to me.

Why would dark pistils be disturbing???
 
@alltatup
No they're not the same strain. Yes I understand that genetics are a factor, but I am concerned because I haven't seen any change for two weeks. The picture is for you to compare the size of main colas of both plants. And you can clearly see that in course of two weeks one got bigger and produced buds and the other did nothing (plant height differs because I decided to put the small plant on a box so it's closer to the light).
They are disturbing because nothing else had grown only some of the pistils turned brown.
What could that mean in terms of plant health, have you seen cases of plants refusing to grow bud?
 
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