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Seedsman Northern Lights (Auto).

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924
4 years ago
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1
FL/60W
Custom
Indoor
Room Type
SoG
weeks 1-9
LST
weeks 3-5
Soil
Grow medium
Grow Conditions
Week 3
Vegetation
13.5
cm
inch
Height
18 hrs
Light Schedule
14+ conditions after
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Nutrients
ml/l
ml/gal
tsp/gal
Grow Technique Usage
LST
Technique
SoG
Technique
Commented by
SourDeez SourDeez
4 years ago
I noticed above the watering volume said "per 24 hours". In case anyone was wondering, I was not feeding my plants every 24 hours. I have only been watering whenever necessary which has been about every 3-4 days. November 28th - I placed an order for a soil pH probe as well as a liquid pH probe. I'm also a bit concerned about the humidity in the room. It bounces up and down between 45-60% RH. A couple of days ago I noticed that walking into the room I sometimes get a wiff of "vegetable" smell. The past couple of weeks I had logged my solution temperature in Grow Diaries, but the truth is I hadn't actually measured the solution temperature. I had a jug of water in my room that I was feeding to the plants so I presume the temperature was actually around ~25c. I will start to log the actual solution temperature this week. November 29th: Huge catastrophe last night before bed. I was removing my lighting hood so that I could clean the dust off of it. As I was doing this the glass fell directly on top of Number 5 and 9. Number 5 got flatted right at the bottom of the stem below the cotyledons! There were still some fibers keeping it dangling on but I pretty well felt that it would be a goner. I took some masking tape and wrapped it around the stem, and then put some duct tape around that after realizing the paper on the masking tape would probably get soggy and wear down. I also took more soil and formed a "mound" around the break. This morning, the plant seems to be doing okay. The leaves are up. Unfortunately I didn't take any pictures of the break or the repair. I am watering the plants as we speak with the same nutrient dilution. I have noticed that there may be some very light nutrient burn going on... Numbers 4, 5, 6 and 8 all are showing a very very VERY slight burn on the tips. You can only tell if you look at it extremely closely. I only noticed it just now in the middle of watering. It has been 4 days since the first feed with liquid nutrients. Prior to this, there was no burning on any of the leaves. This leads me to believe a couple things. 1.) Nutrient burn will take roughly 4 days to show signs. and 2.) even at 1/4th of the recommended dilution of GMB from AN, it can cause a burn. Keep in mind, however, that I am using a soil mixture. Results could be different in an inert medium. Some of the plants seem to be thirstier than others. I've given 2L to some, depending on drainage, but most seem to be getting 20-25% runoff with 1.5L. After watering all the plants collectively with 16L of water, I was left with 5L of runoff and some of the plants continued to drain a bit in the grow area. This amounts to over 31% runoff. This was almost exactly 96 hours since the last time I watered it. With that said, what I think I will do is water it again with 1.5 liters in 72 hours as I want to try to flush away some of the nutes to see if it fixes the burning tips. From there i'll continue an the feed/water cycle every 3-4 days. On another note, 4 days ago I watered until runoff was about 20-30% and ppm was 900. Today I watered to 31% runoff (on all total plants collected in 1 bucket). The ppm today was 1300. I don't know where I got into the habit of checking the runoff PPM, but the more I read the more I see growers saying that checking runoff PPM in soil is pointless. I think I might just stop doing this as it's unnecessarily worrying me. Number 4 has always grown taller than the others. There are much larger separations between the nodes. I decided to begin LST on it by using a coat hanger. Started feeling like I should've just tied it down somehow to the side of the fabric pot as I'm not sure if hitting some roots with the coat hanger would stunt growth. Within five hours the sideways tilted plant had curved upward. December 2-4- Number 1 is showing weird light colored patches as can be seen in the photos. After 2 days the patches started becoming more prominent. They're only on the bottom leaves. It looks like it might be some type of lockout, but i'm not sure. December 7th- A bit of a late update here. I got a new pH probe in the mail, finally. I watered each plant with 1.5-2L of water on December 3rd. I decided to not give the plants any nute except for the cal-mag. The water was as below: Water Amount: 16L Starting PPM (RO): 5PPM Additions: 20mL Cal-Mag Plus Post Cal-Mag PPM: 240PPM. pH: 6.35 I noticed a few days after watering that the top soil was still moist. The pots seemed to retain a lot more moisture than previous waterings. I raised the pots off the ground using these plastic trays with drainage holes. I've started to LST all the other plants that are big enough. Number 1 is tall with 7 nodes (as of Dec 7th), but there is no auxiliary shoot development at the nodes. All the other plants have shown auxiliary shoot growth coming from nodes. Number 1 is also showing some signs of something on the lower leaves. I'm unsure if it is a result of lockout or if it's nute burn. Surprisingly the plant that took the brunt of the damage (snapped stem) from the falling hood glass didn't seem to be phased at all! I'm extremely surprised that the masking tape wrapped around the snapped stem did the job. The plant is a bit less developed and shorter than the other plants that didn't take damage. I noticed yesterday that Number 3 has calyxes with pistils showing! Numbers 4, 8, and 6 are show what looks like calyx formation. Recall last week where I thought my plants might have TMV. Who knows, they still might. However, I did come across a thread (https://www.autoflower.net/forums/threads/advanced-nutrients-autoflower-schedule.65405/) in which the guy happens to be growing Northern Light Autos which have the same look as my plant. Could it be something within the genetics of the ruderalis/northern lights? Who knows.
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Grow Questions
SourDeez
SourDeezstarted grow question 4 years ago
Plant #3 (pic above) started as a sprout with discoloration. Now on its 4th node, the plant is still affected. Some other plants seem to have it to a lesser degree. I learned it may be TMV, but they are healthy and growing well other than this slight discoloration. Any thoughts?
Solved
Leaves. Color - Mottling
like
HighRoller909
HighRoller909answered grow question 4 years ago
No tobacco mosaic virus,I don't even believe that virus to be spread over cannabis plants.You run pots of the same strain,it's most likely a mutation like @SpinnerCaribbean explained. Newer growths look good,no mosaic virus
SourDeez
SourDeezstarted grow question 4 years ago
Plant #1 started out last week with light colored patches on the leaves of the first 3 nodes. The lighter green patches turned into a rustier color. Rest of plant looks healthy. Also all other plants aren't affected and are growing lots of branches, but #1 is not. Any ideas?
Solved
Leaves. Other
like
CRiSPrGrow
CRiSPrGrowanswered grow question 4 years ago
For some reason the microbial life in your soil isn't buffering the pH correctly probably from overwatering ever so slightly up to two or three weeks ago . If you don't have access to pH things you probably don't have access to anything right ? If you did have access you would be looking for beneficial bacteria, enzymes or humic acid (buffers to 6.5). Since you don't what you want to do is let the pot dry a bit more than usual then water very carefully with molasses, hopefully the sugar will feed her beneficial bacteria, make sure you get rid of compacting of the soil just by squeezing your fabric pot. Hope this helps 👊🏻
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CRiSPrGrow
CRiSPrGrowweek 2
hey SourDeez, hope i answered your question 🤷‍♂️, anything else you need just let me know 🚀
CRiSPrGrow
CRiSPrGrow
@SourDeez, nah like i said input 6.0 but you want to measure 6.5 on the way out, this should be done by your soil naturally, but that's not happening. Adding silica in flower is going to cause more harm than good (pH issues with silica) . This problem seems like it's got worse and the pH has not fully stabilised. Instead of silica , try adding humic acid with your feeds. Humic acid will pH to 6.5 . The pH perfect nutrients are not exactly pH perfect sometimes - go figure ! 👊
SourDeez
SourDeez
@CRiSPrGrow, Thanks for the fast reply. What's weird is all of the plants are the same strain but each one seems to be showing different things. Like Number 6 on week 7 has just a single leaf that has a bunch of black and also one leaf with a huge yellow spot that I never noticed (Definitely wasn't like that last week). I still think I have pH problems or the soil is to Alkaline but it's really just a guess. I water in at about pH 6 and then the runoff comes out at 6.8ish. The silica blast is coming today, do you think I should pH my water up to like 6.5?🙏
CRiSPrGrow
CRiSPrGrow
@SourDeez, good news, best i can tell that's from the pH fluctuations from before and the problem seems to have "stopped" spreading, the affected leafs wont recover as in get better, and the damage done "gets worse" in the sense the necrosis completes, give it another week of monitoring if you can see the issue's not spreading or getting that much worse then you can pull it off lol . that's actually not that bad with the damage, think you managed to rectify the situation quick enough to avoid the worst 👊
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CRiSPrGrow
CRiSPrGrowweek 3
The greyish spots look like residue from a splash during watering and the worsening splotchy burn patches could be from a pH fluctuation like last week or something , if it stopped spreading means the soil is buffering itself correctly again 👍🏻
SourDeez
SourDeez
@CRiSPrGrow, Hey dude thanks so much for taking the time to answer my questions on my first grow. I didn't even know this comments section existed as I'm new to the site. It's weird because I wasn't sure if the gray/brown spots were spreading or if they were already there and I just didn't notice. They're hard to notice in the gray stage, but once they're brown it's very apparent. Now I kinda regret that I flushed it today. Anyway, I do have one more question. In my week 5 post that I just uploaded I took a picture of some "soggy" lower leaves that sag and eventually dry up. Is this just natural defoliation or a sign of something else? Thanks again!
8bitdakota
8bitdakotaweek 4
Great looking grow! I am growing the same strain from seedsman, and the pics you listed in week 2 look just like what's on my plant. It's my first time growing this strain, maybe something in the genetics? Either way, I'm around day 40 with it now, and it's looking healthy, but same weird coloration on the leaves this whole time.