Polar Light #2 - balcony grow - one twin has issues?

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Hi guys... :)

First of all - high five to the forum, you all have been a great source on the AF culture and tips. I've been lurking for a while now, but just now have found to be the right time to ask some ques... first of all, to obey the forum rules, the answers chart:


Soil Grows - Peat Based

What is your experience level? (first timer, novice, experienced...)

Your Equipment:
Lighs questions disqualified - equipment - the Sun :thumbs:

Your medium:
7) Specific brand and type of soil, (coco, peat based soilless...) and anything you've added to it. (vermiculite, perlite, worm castings...)
- Terramagma, Soil for flower plants, mixed with 1/10 part perlite. One of the containers uses the same mixture, but it was left aside on the balcony, empty, since last year grow. Bear with me, i suspect this is the root of all problems.

8) Size of container.
- 10-13lit. (no info on the container).


Your nutrients and water:
.9) Source of water. (tap or filtered) What's it's ph?
- Tap water, usualy arround 7,5 ph regulated to ph to 6,0 ~ 6,5

10) Method of checking water ph. (ph pen, test strips, aquarium test kit...)
- Aquarium test kit

11) Method of adjusting water ph. (phosphoric acid, white vinegar, hydrated lime, PH Up...)
- Citric acid - for PH reduction

12) Specific brand and N-P-K ratio for each bottle. List dosages (quantity per gallon) and current feeding schedule.
- 8:3:4 one cap per liter (as indicated on the fertilizer). Fed them once a week.

13) How often are you watering between feedings, and how much per watering?
- Due to high percipitation in my part of the world (southern europe) not too much - at all. Dirt is moist troughout the grow

14) Any additives or tea's? (Superthrive, CalMag, molasses, Mother's Earth...)
- Nope

15) Are your ph levels stable, or do they fluctuate?
- Water (including fertilizer) allways ph balanced

16) What is your ingoing water's ph? ...your runoff ph?
- As mentioned above, arround 6,0 to 6,5 - runnof arround 7,0 - 7,5

17) Do you foliar feed? If so, with what, how often, and at what time do you spray?
- Nope

Your growroom:
Terrace

Your strain:
22) What strain are you growing? (Indica dominate or Sativa dom?)
- Sativa Ruderalis Indica - 60:20:20
23) Is this an photoperiod strain?
- Auto
24) How old is the plant?
- Five weeks (put to germ on 420)

25) In what life-cycle is it? Vegetative, pre-flowering, flowering, rippening?
- Pre-flowering

26) From seeds or clones?
- Seeds

Well, as you see from the questionare above, there is nothing in perticular with my grow here. They have been germinated and put to earth imidiately. Sprouted in jiffi pots, and than transplanted to medium mentioned above.

IMG_8384.jpgIMG_8385.jpg

One of the plants (Left one on the images) had a thinner stalk, and seamed weaker from the start. When i saw that there is a significant difference between the two, i have checked the runoff levels for the first time and the Left one had ph arround 9.5. I have flushed imidiately, until the runoff stabilised arround 7. Before and since then they receive the exact same ratios of water and/or fertilizers within water.

The issues were first indicated when the left one seamed to get yellowish spots on the lower leaves covering the middle of a leaf (arround week 3). Thats when I flushed. After that it seamed weak and i have even put a support stick there so she wouldnt be as weak as she seamed.

So wise AFN team, could you please give me your diagnosis on what could this be? Is it N defficiancy, for this pot had last years mixture in it, and left ouside (in a heavily enclosed plastic bag) troughout the winter? Or it could be a reaction to high ph in the soil it was transplanted to?

Whats my next move? What should i do to make them both healthy green and maximize the yield?

Thnx, and best regards,

Phaze
 
Sounds like a Nitrogen deficiency to me, give her some fertilizer with N in it. Seems like your off to a good start though, gl on your grow.
 
Last edited by a moderator:
Hey phaze,

Just noticed your post. You said they runoff was ~9.5 at one point and you also said the runoff is regularly ~ 7 - 7.5 when you are feeding at ~ 6 - 6.5. This means your soil ph is still quite high. As an example, if you are feeding at 6 an your runoff is 7 then the true ph of your soil is ~ 8. You should bump your water down to adjust the ph of your soil. So for example, if you watered with 6 on the last watering and the runoff was 7 then that puts your soil ~ 8. You should adjust your water down to 5 on the next watering and read the runoff again, that should be a runoff of ~ 7. From that point you will begin watering back on your normal ph. If the runoff begins to drift up again, then you begin to drift down on your watering ph to compensate. Basically you want some drift in the ph but normally by the time you begin seeing runoff change you are there and can begin reducing the ph of your feed water. I say reducing because from my experience my ph always drifts up throughout the grow, normally starting around week 5 with me. Hopefully that helps, also posted one of goauto's pics that helped me during my first grow.

a420er-albums-misc-picture218352-ph-vs-uptake.gif
 
Thnx for the answers guys, I've done both things since the first post: ph-d the nutrient water to 5,0~5,5 with 1,5 dose of 8:3:4 nutrient, and the plant seems to changed the green tone for juuuuust a little bit but it gained no additional staem strength.
Due to the high humidity at the moment, and soil being damp as as a swamp, aim not comfortable with watering and feeding again soon to check the runnof levels... :)

As I stated above, the problematic plant is in one of the pots left on the balcony from last year with the soil perlite mixture in it - and I suspect that it is the root of all problems. It was as closed in a plastic bag, on a place with little to no sun, but open to other atmospheric elements souch as snow, rain etc. I decided to use it for this years grow, before checking its porperties (like the mentioned ph runnoff level). I know now for future grows that it was not a good idea to store the pot like that...

Also there is allways a possibility that Polar Light #2 is not as uniform or stable seed as one would expect. For example, there is no more Polar Light #2 for sale on the seedshops, and Dutch Passion sells and advocates only Polar Light #3. What happend to the #1 & #2? I mean, this seed is obviously from last year... :/

Best regards,
 
Yes, PL2 is an older strain that they have built upon. I just grew the PL2 a few months ago, had them in my fridge for some time. You can see that grow here if you want some information. https://www.autoflower.org/f44/dutch-passion-polarlight-2-grow-17738.html

I will say, they are very particular about ph and they eat a good bit of nutes. But the positive side is, mine took a lot of abuse and still produced an exceptional amount of bud and the quality was excellent. Quite potent indeed.

And, by the way, you are correct. Don't make too many changes at once. You have made some adjustments, now let your soil dry and check the runoff again on your next water/feeding.
 
Hey a420er man! I was convinced that I found all of the PL grows on AFN, but yours has somehow slipped my attention. WOW! Man you've nailed it... :)
I feel a lot more confident about my grow now, considering that I have seen your plants and the discoloration on the leafs in the beginning, and your massive yield in the end... You brought me hope... :D

Anyhow, I couldn't resist the good advice above, and this being the 3rd day since watering, I've decided it's game time again... ;)
First, I've done some LST on them bc this is a balcony grow and stealth is "priority 0". After some sweet and sexy bondage games (pics up soon), I've watered and measured the PH and runoff for both plants - taking into account the numbers in your previous post on this thread.

For the "healthy" sister, good looking and planted in fresh soil, the watering ph was about 6.0 ~ 6.25 and the runoff was at the perfect 6.5.
For the "other" sister, thin and pale looking one, planted in last years stale soil, the watering ph was about 5.5 ~ 6.0 and the runoff was ALSO at the perfect 6.5.

Hope that it will be all nice and easy from now on... The weather in my corner of the world is to change for summer soon (45 Latitude Europe), and the babies will be let to feed on the biggest lamp in this part of the universe...
:booya:

Thnx yall...

:group:
 
Best of luck phaze, DP is an awesome seed company and their genetics are top rate. You won't be disappointed if you stick with it. No doubt.

Consider putting up a thread in the New Growers forum and I will sub with you throughout the grow. It is much easier helping when we can see week to week what is happening.

Lastly, welcome to AFN!
 
Thnx man, I appreciate it... :D

I have used DP seeds before, I grew Beyond The Brain (photo) last year and it was very nice and fruitfull plant to work with. It was also a balcony grow, and due to some time restrictions it had to "go" much sooner than it would be advised. It was a nice, very pleasant smoke (my first), with little to none body stone and a funny head buzz, but I'm proud of it... :D That's why I decided to go with an DP auto...
:joint:

Anywho, not to spam this thread, I'm posting couple of pics of ph refreshed, and LST'd plants. The one that had issues (on the left), seems to have some nice progress already, moving towards darker - greener tones, looking happy.
IMG_8486.jpgIMG_8487.jpgIMG_8489.jpg

Only the bud formation on her doesnt go as well as the other. Hopefully, she is just late due to mentioned ph variations.

Stronger bud:

IMG_8490.jpg

And the not so stronger bud:

IMG_8491.jpg

I will be building a grow reporting machine in the New Growers soon enoguh...

:wiz:
 
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