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mainlining Jack Herer on 40x40cm

zorn_des_kinski

9

89

10

309

2d ago

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VEG

P600 Light Emitting Diodes/100W

FLO

P600 Light Emitting Diodes/100W

Tent

Grow Tent MyHomeGrow 40 x 40 x 160 cm

Filt

RAM 08-350-150 Filter - 100/200

Rapid Air Movement

Qualitäts-Blumenerde Soil

Compo Sana

Perlite

Floragard

Indoor

Room Type

Transplantation

weeks 2

Main-Lining

weeks 3-4

12 L

Pot Size

Start at 13 Week

1/3

zorn_des_kinski Welcome to my second grow diary and my 4th grow in total! Jack Herer has been on my list for a while now and when there was a sale at Sensi Seeds I immediately got a 3+1 pack. I´ve never had the opportunity to try this strain but I heard so much praise that I´m already very exited for the harvest 😊 I germinated it using the papertowel in a ziplock bag method. After only one day the root was visible and i planted it into a 0.5l transparent cup with some holes in the bottom. I put some black tape on it so the roots won´t be exposed to light. Another transparent cup was used as a humidity dome. On 19.06.2025 the cotyledons were unfolded, I count this as day 1. My plan for this plant is to try 4 or 8 fold mainlining and start the flowering phase early as I´ve heard that this strain likes to stretch a lot.

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Used method

Paper Towel

Germination Method

1/3

4 cm

Height

18 hrs

Light Schedule

30 °C

Day Air Temp

No Smell

Smell

40 %

Air Humidity

0.5 L

Pot Size

45 cm

Lamp Distance

zorn_des_kinski Even though the temperature and humidity are far from ideal the plant develops well. Today on 25.06 i removed the humidity dome and she looks happy. Lighting is at ~40%, no circulation fan so far.

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1/6

15 cm

Height

18 hrs

Light Schedule

32 °C

Day Air Temp

6.5

pH

Weak

Smell

45 %

Air Humidity

12 L

Pot Size

40 cm

Lamp Distance

Nutrients 2

Alfa Boost

2 mll

Calmag - BioBizzWWO

Calmag

0.5 mll

zorn_des_kinski In the last week I repotted the plant into its final 12l fabric pot. We had a proper heatwave in Germany - outside temperatures went up to 37°C (98.6°F) where I live, and in the tent, temperatures reached 34°C (93.2°F) - way too hot. Luckily, the plant didn't suffer as much as I did, she grows happily along and doesn't seem to mind. When watering I used 0.5ml/l CalMag and 2ml/l Alfa Boost, pH adjusted to 6.5. I'll carefully start using fertilizer with the next watering.

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Used techniques

Transplantation

Technique

1/9

10 cm

Height

18 hrs

Light Schedule

30 °C

Day Air Temp

6.5

pH

Weak

Smell

45 %

Air Humidity

12 L

Pot Size

35 cm

Lamp Distance

Nutrients 2

Alfa Boost

2 mll

Calmag - BioBizzWWO

Calmag

0.5 mll

zorn_des_kinski I began training her into a 4 fold mainline by topping above the third node when she had 6 nodes in total. I gave her a few days and then removed all growth below the third node. Some gardening staples were used to bind down the emerging side shoots horizontally. After the initial top I only watered her with pH adjusted water and a bit of CalMag and Alfa Boost. Now I wait for the side shoots to develop 3-4 new nodes and will then cut next to the first nodes. Temperatures decreased a bit but I'm still looking at 29-31°C in the tent.

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Used techniques

Main-Lining

Technique

1/4

15 cm

Height

18 hrs

Light Schedule

30 °C

Day Air Temp

6.5

pH

Weak

Smell

45 %

Air Humidity

12 L

Pot Size

35 cm

Lamp Distance

Nutrients 3

Alfa Boost

2 mll

Calmag - BioBizzWWO

Calmag

0.5 mll

Green Power 5in1 - S&R Organics

Green Power 5in1

2 mll

zorn_des_kinski Continued mainlining-training with the second topping right after the first nodes of both sideshoots, as well as bending down the four newly emerging shoots horizontally. Also removed leaves that were covering new growth on them. Got a slight fungus gnat infestation which I treat by spraying and watering with neem oil emulsion.

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Used techniques

Main-Lining

Technique

1/3

23 cm

Height

18 hrs

Light Schedule

28 °C

Day Air Temp

6.5

pH

Weak

Smell

50 %

Air Humidity

12 L

Pot Size

35 cm

Lamp Distance

Nutrients 3

Alfa Boost

2 mll

Calmag - BioBizzWWO

Calmag

0.5 mll

Green Power 5in1 - S&R Organics

Green Power 5in1

3 mll

zorn_des_kinski Neem must have worked well, the fungus gnats all disappeared. I'm gonna treat her one more time to be sure. On 23.07 (day 35) I flipped her to 12/12. I wasn't sure if that was a little early, but as the strain tends to stretch a lot she will probably be tall enough anyway. Next week I will be on vacation and a friend will water her.

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1/2

12 hrs

Light Schedule

30 °C

Day Air Temp

6.0

pH

Weak

Smell

50 %

Air Humidity

12 L

Pot Size

35 cm

Lamp Distance

zorn_des_kinski I'm on vacation right now and a friend cares about watering the plant but for the sake of simplicity I told him not to deal with nutrients and pH so she only receives plain tap water (pH 5.9-6). Before I left I gave her an increased amount of everything. She looks pretty hungry on the pictures he send me, maybe I can instruct him to feed her regardless. As she stretched a lot, she might be to close to the lights. To me the tips look slightly burned. Told him to raise the lights by 10cm.

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1/4

51 cm

Height

12 hrs

Light Schedule

30 °C

Day Air Temp

6.5

pH

Weak

Smell

50 %

Air Humidity

12 L

Pot Size

35 cm

Lamp Distance

Nutrients 4

Compo Grow Blüte

4 mll

GrowsArtig Alfa Boost

4 mll

Calmag - BioBizzWWO

Calmag

1.5 mll

zorn_des_kinski I'm back from vacation, arrived today. The plant looks very hungry but otherwise healthy. She grew considerably and developed lots of budsites. Her stature is nothing like the other plants that I grew before her. Very straight and pretty much no sideshoots. This fits the description on the Sensi Seeds website but I'm curious how she would have developed with regular topping.

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1/5

61 cm

Height

12 hrs

Light Schedule

30 °C

Day Air Temp

6.5

pH

Weak

Smell

50 %

Air Humidity

12 L

Pot Size

30 cm

Lamp Distance

Nutrients 3

Compo Grow Blüte

2 mll

GrowsArtig Alfa Boost

2 mll

Calmag - BioBizzWWO

Calmag

1 mll

zorn_des_kinski Everything seems well. Leaf color is normalizing. There are Budsites everywhere! She has a truly unique structure and I try to imagine what she will look like once the buds gain in size.

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2 comments

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1/5

64 cm

Height

12 hrs

Light Schedule

28 °C

Day Air Temp

6.5

pH

Weak

Smell

50 %

Air Humidity

12 L

Pot Size

30 cm

Lamp Distance

Nutrients 4

Compo Grow Blüte

3 mll

GrowsArtig Alfa Boost

2 mll

Calmag - BioBizzWWO

Calmag

0.86 mll

zorn_des_kinski I think everything is fine. The lower leafs are fading, I hope this is not due to malnutrition.

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1/5

66 cm

Height

12 hrs

Light Schedule

29 °C

Day Air Temp

6.5

pH

Normal

Smell

50 %

Air Humidity

12 L

Pot Size

30 cm

Lamp Distance

Nutrients 4

Compo Grow Blüte

4 mll

GrowsArtig Alfa Boost

2 mll

Grünpflanzen-Dünger

1 mll

zorn_des_kinski Removed yellow leaves on the lower third. Slightly increased nitrogen by adding Compo Grünpflanzen- und Palmendünger (7-3-6).

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1/5

68 cm

Height

12 hrs

Light Schedule

29 °C

Day Air Temp

6.5

pH

Normal

Smell

50 %

Air Humidity

12 L

Pot Size

30 cm

Lamp Distance

Nutrients 4

Compo Grow Blüte

3 mll

GrowsArtig Alfa Boost

2 mll

Calmag - BioBizzWWO

Calmag

1 mll

zorn_des_kinski So far so good

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1 comment

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1/6

68 cm

Height

12 hrs

Light Schedule

27 °C

Day Air Temp

6.5

pH

Normal

Smell

50 %

Air Humidity

12 L

Pot Size

30 cm

Lamp Distance

Nutrients 4

Compo Grow Blüte

4 mll

GrowsArtig Alfa Boost

2 mll

Calmag - BioBizzWWO

Calmag

1.5 mll

zorn_des_kinski Brown spots appeared on some leaves so I increased the amount of CalMag

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1 comment

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1/4

69 cm

Height

12 hrs

Light Schedule

27 °C

Day Air Temp

6.5

pH

Normal

Smell

50 %

Air Humidity

12 L

Pot Size

30 cm

Lamp Distance

Nutrients 4

Compo Grow Blüte

4 mll

GrowsArtig Alfa Boost

2 mll

Calmag - BioBizzWWO

Calmag

1.5 mll

zorn_des_kinski Getting chonky :)

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Paflucycommentedweek 132d ago

Calmag from Biobizz is very weak and takes a long time to be absorbed. When I worked my way up to 3 ml/L and it still didn’t help, I just gave up. I switched to Calmag from BAC and the problem disappeared immediately. And when you’ve got magnesium deficiencies, potassium won’t be absorbed either. Good luck!

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Paflucycommentedweek 132d ago

Calmag from Biobizz is very weak and takes a long time to be absorbed. When I worked my way up to 3 ml/L and it still didn’t help, I just gave up. I switched to Calmag from BAC and the problem disappeared immediately. And when you’ve got magnesium deficiencies, potassium won’t be absorbed either. Good luck!

like 1

zorn_des_kinskicommented1d ago

@Paflucy, thanks for the advice, I'm gonna keep that in mind :)

like 1

GroloCupcommentedweek 1116d ago

That's almost artwork! Beautiful

likes 2

billycardine0420kingcommentedweek 23mo ago

I chose this strain from Sensi as well

likes 2

Inganjawetrustcommentedweek 132d ago

Killer colas !!

like 1

Selkotcommentedweek 123d ago

really nice HST & LST !

like 1

Versizecommentedweek 52mo ago

I'll be following this as we are almost on the same trajectory time wise on the same seeds. Yours is looking mighty fine. Very cool technique. I see my training is far les structured.

like 1

zorn_des_kinskicommented2mo ago

@Versize, I just followed your report as well :) I don't try mainlining to increase my yield but simply because I like the challenge of trying something new. And it will for sure be interesting to compare the plants development

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Versizecommented1mo ago

@zorn_des_kinski, I'm also still figuring out the whole grow diaries. Just saw many of my notifications. Yours is doing fine considering it hasn't been fed for a while. A smaller plant like that at least transpires a lot less water, so has it's perks. And I agree. Since I started growing I just try different techniques, just for the sake of fun. It's an hobby after al.

like 1

vyndalincommentedweek 81mo ago

very nice main-lining

like 1

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mainlining Jack Herer on 40x40cm

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