HELP! Auto-plant yellowed the leaf and crashed

[ataldacrema]

Hi folks, how are you? I am in my first cultivation and I came across a situation that I am not managing to solve.

Two weeks ago I started to notice something different, first the plants stopped and the youngest leaves started to lighten up to a light green color, including in the veins of the leaves, then, after about seven days, the leaves started to turn yellow and the affected area increased a lot, from something centralized and small, to something spread going towards the edges of the leaf and already much bigger, moreover, the symptoms started to go down from the youngest leaves to the middle ones, and finally, during the second week of symptoms, the yellow became almost white, I also noticed that the petiole of some leaves was a little purple, on a few leaves I noticed a few brown dots, in the shape of a circle, today, at the beginning of the third week of symptoms, they seem to be still locked, but the color of the leaves seems to be returning to normal, although some leaves are ugly/brown and the plants look unhealthy.

Good news: I can smell them slightly (which I didn't have before, they are in bloom as I understand it).

Could someone please tell me what could be happening and maybe how to solve it? Thanks a lot!

Age:

• 40 days

Setup:

• tent 100x100
• qb 240w lm301h (100%)
• pots 11 L (2.9 gal)
• 2x vivosun fans
• 1x vivosun exhaust

Seeds:

• 3x sour diesel auto - fastbuds
• 2x big bang auto - green house

Nutrients:

• biobizz top max (2ml/l - 7.57ml/gal)
• Biobizz bio grow (3ml/l - 11.36ml/gal)
• biobizz bio heaven (3ml/l - 11.36ml/gal)
• biobizz biobloom (2ml/l - 7.57ml/gal)
• biobizz fishmix (3ml/l - 11.36ml/gal)
• biobizz algamic (2ml/l - 7.57ml/gal)

(One day on with 500ml of solution (water+fert), one day off, one day on with again 500ml of solution (water+fert), one day off, one day on with only 500ml of water (no ferts), one day off… repeat..

Soil:

• 80% Carolina Soil
• 20% Worm Humus

 

[ataldacrema]

Most recent photos (today)

 

[Rwise]

https://www.growweedeasy.com/cannabi...per-deficiency
https://www.growweedeasy.com/cannabi...ron-deficiency
https://www.growweedeasy.com/cannabi...ium-deficiency
https://www.growweedeasy.com/cannabi...ese-deficiency
https://www.growweedeasy.com/cannabi...gen-deficiency
https://www.growweedeasy.com/cannabi...fur-deficiency
https://www.growweedeasy.com/cannabi...inc-deficiency
With each of these goes PH, whats the PH?
Also I see wet on the leaves, make sure the lights are off if/when you spray anything on them. Water drops cause burns under our lights.

 

[ataldacrema]

https://www.growweedeasy.com/cannabi...per-deficiency
https://www.growweedeasy.com/cannabi...ron-deficiency
https://www.growweedeasy.com/cannabi...ium-deficiency
https://www.growweedeasy.com/cannabi...ese-deficiency
https://www.growweedeasy.com/cannabi...gen-deficiency
https://www.growweedeasy.com/cannabi...fur-deficiency
https://www.growweedeasy.com/cannabi...inc-deficiency
With each of these goes PH, whats the

Also I see wet on the leaves, make sure the lights are off if/when you spray anything on them. Water drops cause burns under our lights.

Hey Hello, thx for help me.
So, last week I had already looked at these links and researched about it, it seemed to be sulfur deficiency, but since I don't understand much, I couldn't confirm it.

About pH:
water: 9.1
solution (fert + water): 6.2
soil (sample of the top part diluted in water): 8
runoff (sample of the bottom water after flush): 7

The wet leaves are from a foliar watering I did with some Epson salt, but I erased it right afterwards, thanks for the tip

 

[ataldacrema]

I have followed the chart below correctly since forever, currently I am in week 5.

 

[farmerchand]

Really these links are very helpful.

 

[90Gizmo]

Do you have another way of testing the pH? 9.1 for water seems high to me. If you have "city water" that number is probably wrong but who knows what comes out of a well

 

[golfnrl]

I would be looking at nutrient strength. Reduce the manufacturers recommendations by at least half and start there. Do I understand you’re watering everyday? That’s a lot. Less is more with hand watering, at least that’s what I tell myself to keep from overwatering, cause that’s really easy to do. You need a good PH tester.

 

[Rwise]

Sulfur starts in the veins and moves into the leaf on new growth. Keep working on the PH, do you let the solution rest for like 12(24) hours and then recheck the PH? I find some methods of PHing are not stable and drift up or down.

 

[3Berries]

Get a good pH meter. The cheap pens are garbage as are the stick in the dirt probes short of $200. Stick in the dirt water meters are good, though you need to learn how they read and not necessarily go by the dial indicator. I have three and only use two as one is way off.

if you want a great start and no nutes needed for a month or so use some Fox Farm Ocean Forest soil.

 

[SoOrbudgal]

Quit feeding and flush the soil is what i'd do. Overfed and not enough aeration to the soil looks like. Over thinking the food, autos don't need alot of food.