nutrient burn or deficiency ?

[Glen81]

Hello everyone this is my first grow.

Setup is
-2x2x6 tent.
-11 liter pots with Biobizz Lightmix Organic Soil
-2x120W QB LM301H dimmed both to 50%
-3x Northern Light Auto from RoyalQueenSeeds
- lighting 18/6
-Temperatures 20 degrees at night, 24 degrees during the day, humidity between 50-60%


I water currently every 3-4 days, about 2.5-3l tap water go in without drain.
It is fertilized according to the BioBizz plan. As well as BB CalMag 0.3ml / l
I do not measure PH and EC because you probably don't need it with organic soil. I was told.

Unfortunately I seem to be deficient or overfertilized.
What does that look like for you?

Sorry if my English is not good, I used google translate.

best regards

 

[Builder0101]

Get a ph pen. Get an EC meter.
Doubt you can save those plants that look the worst. Too far from finish. Thise leaves are too far gone. Even if tou can get new leaves to push out. Well maybe. PH at 6.0. I assume ykur water is over 7. Most is. Is it city water. Are you dechlorinating the water?

 

[Bill.de.Cat]

Hello everyone this is my first grow.

Setup is
-2x2x6 tent.
-11 liter pots with Biobizz Lightmix Organic Soil
-2x120W QB LM301H dimmed both to 50%
-3x Northern Light Auto from RoyalQueenSeeds
- lighting 18/6
-Temperatures 20 degrees at night, 24 degrees during the day, humidity between 50-60%


I water currently every 3-4 days, about 2.5-3l tap water go in without drain.
It is fertilized according to the BioBizz plan. As well as BB CalMag 0.3ml / l
I do not measure PH and EC because you probably don't need it with organic soil. I was told.

Unfortunately I seem to be deficient or overfertilized.
What does that look like for you?

Sorry if my English is not good, I used google translate.

best regards

Not really enuff info to guess. Tap water from city or tap water from well... at the least you should be checking ph on it...if city water, let it sit for 24 hrs giving it a stir every once awhile to release any chlorine. If well, definitely check ph, my well runs around 9/10 out the tap. I just use an aquarium ph test kit to get it around 6.5 after any additives.

 

[Glen81]

Hey, thank you for the answers

of course I let the water sit for 24 hours before using it.
PH is around 8 after I let it stand.
After I put the nutrients in the water, the pH goes down to about 6.

I tested with the PH Testkit Solution not a PEN.

 

[Builder0101]

Yiur log has 5s and even 4s for PH. That will fuck up your plants. 5.8 is the low end if in coco. Too low for soil. You should PH to 6.5 with zero inputs and water to 50% runoff. I think you should do that for 2 waterings. Then PH to 6.0-6.5. You have so many issues. Start there. There is no such thing as calmag. There is calcium and there us magnesium. Yiu do not have a calcium def yiu have lock out. Quit throwing fuel on the fire.

 

[Glen81]

okay thanks i try that

 

[Builder0101]

Get the heat up to 27 or 28. Try a 20/4 cycle. Perhaos it will promote more leaf development.

 

[Builder0101]

Under led i keep my tent at 29

 

[Glen81]

Under led i keep my tent at 29

Hey , many thanks i have do the things you told me an no new necrosis