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Greenhorn Grow - CBD Critical Mass

63
84
712
2 months ago
Indoor
Room Type
Soil
Medium
LST
Technique
ScrOG
Technique
Topping
Technique
Defoliation
Technique
LED (400W)
Vegetation Lights
LED (400W)
Flowering Lights
Photos & Videos
Greenhorn Grow - CBD Critical Mass week 14
Greenhorn Grow - CBD Critical Mass week 14
Greenhorn Grow - CBD Critical Mass week 14
Greenhorn Grow - CBD Critical Mass week 14
Greenhorn Grow - CBD Critical Mass week 14
Greenhorn Grow - CBD Critical Mass week 14. Greenhorn Grow - CBD Critical Mass week 14. Greenhorn Grow - CBD Critical Mass week 14. Greenhorn Grow - CBD Critical Mass week 14. Greenhorn Grow - CBD Critical Mass week 14.
Grow Conditions
Week 14
Flowering
35.56
inch
cm
Height
14
inch
cm
Height
12 hrs
Light Schedule
31
°F
°C
Day Air Temperature
88
°F
°C
Day Air Temperature
6.5
pH
45%
Air Humidity
Strong
Smell
27
°F
°C
Night Air Temperature
81
°F
°C
Night Air Temperature
3
gal
l
Pot Size
11.36
gal
l
Pot Size
27.94
inch
cm
Lamp To Plant Distance
11
inch
cm
Lamp To Plant Distance
0.26
gal
l
Watering Volume Per Plant Per 24h
1
gal
l
Watering Volume Per Plant Per 24h
Nutrients
Commented by hufflepuff hufflepuff
2 months ago

I have a crisis! We had visitors last week, so I wasn't paying as close attention to my girls as I had been & somehow in the space of 7 days they've gotten sick :(

I suspect leaf septoria or a calcium deficiency (see photos - argh!). I'm in a bit of a spin and need some good advice now.

I'm two weeks away from harvest, and I'm not sure what the best course of action is. The smell in the tent has changed in the past 24 hours from thickly weedish to a little sharpish sour. This week was meant to be last week of nutrients, then the flush the following week, then harvest. The top leaves are definitely affected.

So that's where I'm at. All advice appreciated!

EDIT: After doing a total deep dive, I'm confident it is a calcium deficiency and not septoria - phew! From what I've read, this is a common problem when using BioBizz nutrients and rainwater. I don't have a cal-mag nutrient in my arsenal here and it could take up to a week to get my hands on some. I also want to keep things organic so I'm improvising. Ground up egg shells (calcium), epsom salts (magnesium), unsulphured molasses (more calcium, magnesium, iron & some other good stuff) to the rescue! Unfortunately, this means my grow is no longer vegan but the chickens that are responsible for the eggshells being used are our own very happy chooks. Wish me luck!

Comments
BeefWellingtons
BeefWellingtons week 14

Same as I commented on your other grow, looks like magnesium deficiency, add cal-mag supplement, good luck!

hufflepuff
hufflepuff

Thank you @BeefWellingtons ! I've been reading like a mad woman for the past hour and apparently it's a common issue with the BioBizz nutrients if you're using filtered rain water, which I am :)

Tonino
Tonino week 14

I am just curious why would you want to grow vegan cannabis ? No disrespect just curious :pray:

hufflepuff
hufflepuff

@Tonino Thanks for asking and not using the phrase "but bacon!" in your question ;)

For me personally, it's a matter of ethics. I prefer to do all things with as little impact on other living sentient beings as possible. If animals don't have to die to fertilise my grow then that makes me a happy hufflepuff - hence why I can live with the eggshell. My chickens are happy and don't have to die to produce them :)

Aparecium89
Aparecium89 week 14

I used Dolomite Lime to fix my Cal/Mag issue in the last few weeks of flowering. Good luck!

hufflepuff
hufflepuff

Thanks for the advice @Aparecium89 ! It might be too slow to absorb in my case. I'll definitely be adding it earlier for my next grow now that I know. Congrats again on your harvest :)

Jeanpol
Jeanpol week 14

"EDIT: After doing a total deep dive, I'm confident it is a calcium deficiency and not septoria - phew! From what I've read, this is a common problem when using BioBizz nutrients and rainwater. "

I think you are right. My girl with the same rainwater, the same nutrients and the same problem. I tried to solve it mixing rainwater with restful tap water (without chlorine). For the moment the problem seems to be stopped.

hufflepuff
hufflepuff

@Jeanpol Thanks for sharing your experience. I think BioBizz nutrients have been great for my grow but it seems to be a common problem. Unfortunately we don't have access to tap water here. Next time I'll be prepared for it though! Your autoflower is charging along! Doesn't look too far out from harvest now. Good luck :)

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