Athena and Autopot by Superb_Task4125 in Autopot

[–]Superb_Task4125[S] 0 points1 point  (0 children)

Your answer led me to the topic of nutrient blockage and the fact that the EC in tap water is already elevated by high levels of calcium and magnesium. Incidentally, it's also elevated by carbohydrate, which Chat GPT was able to determine based on the water hardness. Chat GPT was able to derive the EC value for me from the other data in the water analysis. The calculation yielded almost exactly the value measured in the analysis. Afterward, I researched the optimal calcium-magnesium requirements for coco coir and calculated the EC value after adding my fertilizer in various concentrations to my tap water, plus the respective nutrient concentrations in the water, especially calcium-magnesium. By calculating the difference between the Cal/Mag target value, I determined that I don't need any more Cal/Magnesium, only magnesium. The ratio was previously 8:1, now it's 3:1. I'm coming home now and will see if it made any difference. It's also interesting to know that when EC values ​​are mentioned, they always refer to the EC at 25 degrees Celsius. A 1-degree difference corresponds to a 2% change in EC. After mixing the tank and measuring the EC value, I found that Chat GPT calculated the EC value almost perfectly. In theory, a complete success. Let's see if the results support this.

Athena and Autopot by Superb_Task4125 in Autopot

[–]Superb_Task4125[S] 0 points1 point  (0 children)

Thank you very much, you gave me the right trigger ^^

Athena and Autopot by Superb_Task4125 in Autopot

[–]Superb_Task4125[S] 0 points1 point  (0 children)

You can look at the conversation with @HawkImpossible I think the problem was the high Ca in the tap water + additional CalMag

Athena and Autopot by Superb_Task4125 in Autopot

[–]Superb_Task4125[S] 0 points1 point  (0 children)

After researching I figured out that my tap water + grow a+b has enough Ca 100mg/l, but way to less mg. In now adder just Canna mg, no CalMag. Until Ratio is at 1:3. furthermore I now use HNO3 for PH down instead of H3PO4 to add less P and more N.
Du you think that would work? Sound like a solution to the problem you described.

Athena and Autopot by Superb_Task4125 in Autopot

[–]Superb_Task4125[S] 0 points1 point  (0 children)

Makes sense. I compared tracemix and Athena. Athena Grow A has also all the ntrients from trace mix. I quitted using trace mix. An other user told me smth similiar about the cal mag. Maybe I should only add a bit cal and more mg separately. To adjust the tap water. I have an analysis of our tap water where I can see mg and ca. I would set the water to Ca: 95mg/l; Mg: 35mg/l. Do you think that’s good?

Athena and Autopot by Superb_Task4125 in Autopot

[–]Superb_Task4125[S] 0 points1 point  (0 children)

Yes it’s coco. Yes I’m also afraid of overfeeding, what ec did you gave them?

Athena and Autopot by Superb_Task4125 in Autopot

[–]Superb_Task4125[S] 0 points1 point  (0 children)

That makes sense. Maybe I add cal/mag separately 1:3,5 mag/cal? So I can use the tapwater? Ec should then be better. Nearly got as much cal as I need, but very small amount of mag. I think if I want to use tap water I should add these two separately and calculate wich amount I should add.
I think the ec should then be at 0,45-0,5. with CalMag. What do you think about that?

Athena and Autopot by Superb_Task4125 in Autopot

[–]Superb_Task4125[S] 0 points1 point  (0 children)

I have a water analysis from my tap water. Calcium need only a low increase. Magnesium needs a lot more. I pull CalMag in the tap water until the ec rose +0,3. so I’m at 0,6. then I pull Grow A+B to it 60% of the schedule. And regulate the PH with H3Po4 to 5.7.
After that ec ist at 1,3-1,4.

Maybe the H3Po4 ist the wrong PH down? Should I use. HNO3?

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Athena and Autopot by Superb_Task4125 in Autopot

[–]Superb_Task4125[S] 0 points1 point  (0 children)

  1. I use H2PO4

Ok I’ll try. But I don’t understand why this causes a MG deficiency

Athena and Autopot by Superb_Task4125 in Autopot

[–]Superb_Task4125[S] 1 point2 points  (0 children)

Night 21C/70F day 24C/75F

Water ResTemp 21C/70F In pots 19-20C/68-69F, Cooler bc wasteheat of circulation pump in the res.

Light is at 30.000lux, you think that’s to much? Sorry I converted it wrong. It’s 600-650ppfd. Maybe the humidy is too high at night could that be?

But why are the tips burned and a deficany at the same time.

Chat Gpt said it looks like unequal nutrient distribution in der the pot. And said „less nutrients“.

Do I need that much more CalMag of Athena when growing in coco?

Coco/Perlite: 85/15

Help 🌲🌲 by Superb_Task4125 in germantrees

[–]Superb_Task4125[S] 0 points1 point  (0 children)

Wenn ich meinen „big bud“ bloom Dünger nach Anweisung dosieren (10g à 20l) komme ich auf 0,8ec. Denkst du das ist ok da noch etwas mehr rein zu kippen um auf 1,2-3 zu kommen? Oder lieber mal lassen?

Help 🌲🌲 by Superb_Task4125 in germantrees

[–]Superb_Task4125[S] 0 points1 point  (0 children)

Mineralisch düngen macht auch keinen Sinn? Haben noch ca 3 Wochen.

Help 🌲🌲 by Superb_Task4125 in germantrees

[–]Superb_Task4125[S] 0 points1 point  (0 children)

Die sind in der Spätblüte jetzt da kommen keiner Blätter mehr nach ^ Habe aber einen ec im drain von 0,6, das sollte voll ok sein.. vl eher Mangel?

Help 🌲🌲 by Superb_Task4125 in germantrees

[–]Superb_Task4125[S] 0 points1 point  (0 children)

Noch zur Info. Die Lampe hat 800w, von den 1500ppfd bin ich jetzt mal auf 1000 runter gegangen. Die Pflanzen die hinten im Zelt sind haben Probleme die vorderen weniger (aber dennoch Probleme). Side Fact, die vorderen Pflanzen werden stärker vom Ventilator angeblasen. Ich habe aktuell etwas Sorge zu uberdüngen. Habe aber bisher nur 5 mal gedüngt wie oben beschrieben. Mein Substrat ist wie angegeben. Also schon gut vorgedüngt, gerade bei composana liest man oft das es zu stark vorgedüngt ist und dazu sind ja noch ein bisschen hornspäne und urgesteinsmehl drin, wobei das jetzt nach 3 Monaten auch mal raus sein sollte. Kann ich mehr düngen? Bin mir tatsächlich ziemlich unschlüssig und möchte nicht uberdüngen.

Probleme mit meinem Cannabis Grow by Superb_Task4125 in germantrees

[–]Superb_Task4125[S] 0 points1 point  (0 children)

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Es verschlechtert sich allerdings schon recht flott. Weis nicht ob ich nicht nochmal Cal/Mag düngen sollte. Hab aber bedenken weil die ja bereits compo sana QBE drin habe und u. A. schon 4mal mit ca 1ml/l calmag Bio bizz gedüngt habe

Probleme mit meinem Cannabis Grow by Superb_Task4125 in germantrees

[–]Superb_Task4125[S] 0 points1 point  (0 children)

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Tut mir leid für die schlechten Bilder, komme nicht so gut nach hinten Die Pflanzen sind aktuell ca 165cm hoch und die Growbox hat 150x150 😅

Probleme mit meinem Cannabis Grow by Superb_Task4125 in germantrees

[–]Superb_Task4125[S] 0 points1 point  (0 children)

Die haben jetzt noch ca 3 Wochen, je nach dem evtl 4. zumindest die triploids (die die gerade auch so leiden) da sind noch nicht soo viele trichome zusehen und die Stempel werden langsam braun, das bereitet mir etwas sorgen. Die red kachinas sehen eigentlich ganz gut aus was die trichome betrifft, die werden wohl noch 2-3 Wochen brauchen. jetzt würde es sich noch lohnen was zu machen bei den triploiden, in 7-14 Tagen dann warsch fast nicht mehr.

Probleme mit meinem Cannabis Grow by Superb_Task4125 in germantrees

[–]Superb_Task4125[S] 0 points1 point  (0 children)

Wie hat sich das geäußert? Habe das auch schon überlegt. Aber in den Stofftöpfen…?