Autoflower first grow day 43, any tips?

[eugeeen123]

Hi All, i'm on my first indoor grow using a simple 100W TS600 lamp (DLI around 45). Currently on day 43 and just removed all my LST strings since i think the canopy seems to be good and filled out evenly the grow room (small 60x60x140 tent).
Using a 5Gallon fabric pot with Biobizz light soil and used Biotabs starter pack full nutes kit.

Average Temp. is around 27 Celsius and 50% Humidity. There is an heat wave right now so is kind difficult to control temperature, i had some quick spike of around 30Celsius. I have the inline extractor and small fan always on.

I use tap water of around 7PH, i dont check PH since Biotabs told me it shouldn't be a problem with the nutrients i used.
In the past few days i removed 3 lower leaves that started became yellowish with brown spots. I dont know if that is normal or not, the plant overall looks healthy.

What do you guys think? i really appreciate some tips i'm not sure if i'm doing fine or i can do better.

 

[crucialbunny]

That's a grow any veteran farmer would be proud of. Good work

 

[90Gizmo]

Yeah, keep doing that. Check your leaves against cal-mag deficiency

 

[SoOrbudgal]

Excellent first grow :laugh: get a fan an open the tent door gentle breeze keep the air flow going during the hottest parts of the day. Try removing very low bud sites and small stems that won't produce those close to the soil. Otherwise let her RIP man she looks great.

 

[Bluey]

Your grow is going great but keep an eye out for more leaves doing the spot thing. Check regularly and if more appear a good photo posted here..probably calmag deficiency. You must keep on top of that as it can spread throughout fast.

 

[quirk]

That is a great looking plant. Check out the May 14 Newsletter where Nebula discusses and illustrates a strategic defoliation technique. I've incorporated it in my current auto grow and I like what I'm seeing.

 

[Bluey]

What is the EC of the nutes you are giving them?

 

[eugeeen123]

thank you very much for the feedback

 

[eugeeen123]

I will indeed keep an eye out, right now i just removed in the last 2 weeks all the yellowish leaves with brown spots. Like 4-5 total, hope for the best. Thank you very much for stopping by and give me some tips.

 

[eugeeen123]

i already have a small fan inside (the one you can clip to the tent structure) n addition to the extractor fan. Following your tips i added also a big fan outside the tent to get a better air flow. My grow tent is installed in a small room and it is not easy to get proper airflow, i want also to try achieve a smart solution to not waste a lot of energy. Thank you very much for your feedback.

 

[eugeeen123]

i will, right now apart from the 4-5lower leaves i removed in the past 2 weeks i have no new yellow leaves. Basically i should be done with nutes (based on vendor instructions) so i just have to water till harvest.
Hope for the best.

 

[eugeeen123]

I found the link:
1.https://www.growweedeasy.com/10-mos...-of-usefulness#cannabis-defoliation-technique
2. https://www.growweedeasy.com/nebulas-flowering-stage-defoliation-tutorial

i want to try since my plant is a little bit too bushy (it is good of course but it can be dangerous later on), I'm hesitant since it is my first grow and i don't want to mess up. My plan is to do it little by little, especially in the lower side to improve airflow and light penetration. Thank you for the feedback.

 

[SoOrbudgal]

I hear ya eugeeen123 i'm running autos too indoors besides growing outdoors right now. I'm just leaving the flaps open and windows in the room open. Come July it will be very warm.

 

[eugeeen123]

Based on nutes vendor instructions (biotabs starter pack), since i'm growing organic i dont have to measure EC and Ph of water.

mycorrhizae fungi and bacteria are supposed to ensure proper nutrients absorption regardless of Ph and EC.

I dont know EC values for nutes i checked everywhere on their descriptions but couldnt find any, main fertilized i gave to the plant are:

Startrex Organic soil improver at week 1 (NPK 3-1-2)
Mycotrex for fungi and bacteria at week 1

Orgatrex liquid fertilized (NPK 5-1-5) 5 ml on week 1 and 20ml on week 5

3 total Biotabs tablets slow releasing fertilizer (NPK 15-7-8) 1 each week 1 to 3

Bactrex for fungi and bacteria at week 1 and 5

Basically after 500ml of water with Bactrex and Orgatrex 20ml i gave to the plant on week 5 i should be done with nutrients to the plant and give only water until harvest. I started noticing yellow leaves (with few brown spot on top) just after i gave the plant those last nutes. So maybe what i'm seeing is a little nutrients burn even if i strictly followed vendor schedule for autoflower plant.

Do you have any suggestions? many thanks for stopping by!

i'll make sure to measure EC from water runoff on my next watering, and let you know.

 

[Bluey]

Looking closely at your pics you definitely do not have nute burn. The leaves you are removing have been stripped of their nutes because the there is not enough at the roots.
Not sure what strategy to adopt given your medium as I grow in coco now and never had problems with nute deficiency in soil..but I pretty much always lost the lower leaves like you.

 

[eugeeen123]

maybe i'm killing good bacteria due to tap water with oo much chlorine? last few watering i didnt wait 24h before watering and let chlorine evaporate. Dont know. Let;s see what happens next few days.

 

[eugeeen123]

i followed your tips and removed 2 little stems on lower side, they looked fine and had flowered but no way they could give big buds. I planned to do this gradually so hopefully i dont harm the plant. I'm not confident enough to remove upper leaves yet and spot the right one to cut. Thanks again and good luck for your grow!

 

[eugeeen123]

Hi All, at day45 unfortunately i'm seeing more yellowing leaves. They are all lower side of the plant. I am screwed?

 

[crucialbunny]

eugeeen123 try not to overthink things. I've been using water straight from my hose for years with zero issues. Give the soil a little molasses tea with every other watering and the beneficials will stay happy. At this stage most plants will have some lower leaf browning and I just clip mine off since they're essentially not serving a purpose any longer.

 

[90Gizmo]

Does your soil or tabs provide potassium for the flower stage? Plus I think you are more that a few weeks from harvest so it might be too soon to stop fertilizer.