First experience, need help

Hello dears, I started planing a cannabis sativa at home with zero accessories at hand. I recently feel that my plant is growing very slowly and the stem has stayed same size as weeks before; I will put first week photo below and last week;

Week 2

Week 11

Is my plant sick? Does it look like it needs specific minerals or fertilizer?

I appreciate your feedback!

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To better answer your questions we will need a little bit of information:
Grow Journal Check List

Seedbank:
Media:

Strain (bagseed too):
Indoor: Tent
Tent:
Lighting:
Light height:
Temps (day and night): Day= 75 f, night= 69 f
Relative Humidity (day and night) : Day 65 % - Night 50 %
Added Air (fans, portable acs, heaters, dehumidifiers) : Humidifier
Ventilation:
Pot sizes:
Nutrient type:
Ph numbers:
Ec and PPM: PPM
Water Temps:
Co2:
We love info that way we can better assess the situation you have going on an being able to help you to the best of our ability!

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??? window sill

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I really don’t know the specifics of the things you asked and I don’t have any ability to measure those. I just researched online why my leaves started getting yellow and curled as you see in the photo, I was told it may have to do with the ph of the soil, but the ph is 6.0 which is normal.

Temperature is : 40-50 F
Seed is pure sativa cannabis

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Not really, it’s open and ventilation is good.

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Couple things can be your largest issue…

If you can put your plants on a heat mat you’ll get a lot better growth…40-50F is pretty cold. You would like to keep your root system about 76-81F

Second, with slow growth it’s very easy to get your plants waterlogged. Remember that with slow growth your plants respiration is very limited…requiring much less water.

My best guesses…Good Luck
Bob

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