Week 3 started and she is doing ok, but got some spots on the leaves that looks like some magnesium deficiency.
I changed the Ca/Mg relationship back to 3:1 and raised the calmag a bit from 90/30 mg/l to 100/33,3 mg/l.
Yesterday i gave a bit more CalMag to 120/40 mg/l and it seems to work. At least it slowed the progression down so i will raise to 140/47 mg/l today and change the solution.
She will get the heavy feeding from the canna chart.
Both lights are set to 75% what pulls about 450W from the wall and i think she can take it easily.
If i could get the temps down i would give even more light pressure, but the VPD is already over maximum and from now on i have to invest money to develop.
So here are my limits, because i can supply myself and thats all i wanted. This run is meant to test out, how far i can go and how much is possible with strong genetics.
In the next run i will try to reduce my costs step by step without sacrificing too much yield.
She got her first leaf cut on day 17
I changed the reservoir on day 20 and set the calmag relationship to 3.5 : 1 with a measurement of 116,55 mg/l cal to 33.3 mag calculated including my tapwater values of 44.1 cal and 22.5 mag.
My PH is drifting from 6.2 to 5.2 in about 20h and i push it back with KOH. I guess its lack of potassium and i will test this at the end of the reservoir time in about a week.
The EC set itself to 2.2 with all nutrients i wanted to be in my solution.
@High_And_Hydro, hey i don‘t mean to critique and i like your thinking, but there is unfortunatetaly no evidence to support that in fact, it shows that it does more harm than good. The amount of litght they resive isn‘t even sufficient enough and the planst like absolute darkness because photoperiods are very sensitive to light pollution and regulate things during the night. You might have seen people do this with Autoflowers but i really wouldn‘t resommend with photoperiods! They could transitions back to Vedge or worse become hermaphrodit. I‘m sorry im stressing this bro!😭
@SimpleGrow, Hi, yes, they are on. I want to test, if it extends the flowering phase to get bigger plants and more yield. Some ppl leave their lights 24h on, so it should not be a problem, but we will see 😅
Sorry noch eine sache dann bin ich weg. Ich habs selbst erst entdeckt aber zu viel Kalium stört den sekundären Stoffwechsel in den Pflanzen wodurch weniger cannabinuide entstehen. Hier ist ein Link zu einer studie:
https://www.mdpi.com/2073-4395/12/5/1242
@SimpleGrow, Hi, die Studien der mdpi habe ich gelesen. Wo hast du denn so genaue Zahlen der Inhaltstoffe her? Ich rechne nämlich auch alles, solange es Sinn macht und praktisch auch umsetzbar ist. Canna gibt die genauen Zahlen nicht raus, da hab ich schon angefragt. Zudem suche ich schon länger nach belastbaren Daten, was die Versorgung angeht. Die 160mg/l N hab ich auch noch gefunden, aber auch, dass es gar nicht so leicht ist, eine Phosphor oder Kalium-Vergiftung zu erzeugen.
In der Vegi hatte ich immer Probleme mit Drift, da ich zu wenig Kalium, bzw. zu viel Stickstoff / Nitrat im Wasser habe. Den habe ich mit PK 13/14 ausgeglichen und soweit sieht alles ziemlich gut aus.
Der EC ist nach Schema von Canna und den werde ich auf gar keinen Fall verringern. Ich hab die Bilder aus den Foren der Deutschen gesehen. Die haben fast alle das Problem, dass sie "Angst" vor einer EC-Zahl über 1 haben. Dadurch haben sie mit heftigem Drift und lächerlichen Verbrennungen zu kämpfen und geben frustriert auf. Wenn man dann man genau in die Aufzeichnungen schaut, dann kann man direkt sehen, woran die gescheitert sind.
Hab da schon ein richtiges Horrorkabinett an Bildern gesammelt, wie man es nicht machen sollte und ich bin auch ziemlich selbstsicher, was meinen EC bzw. die Zusammensetzung meiner NL angeht. Mein Ansatz ist da eher: Voll in die Fresse, sie lernen schon damit umzugehen. Wer nicht mithalten kann, wird entsorgt.
Also i calculated your npk and I came out with 240mg/L Nitrogen, 162mg/L phosphorous and 456mg/L potassium wich is huuuge!! You might have had simptoms of potassium excess wich Blocks the absorption of other elements such as calcium, magnesium, zinc and iron.
The ideal amount recomendet for Hydroponics is 194mg/L N, 59mg/L P and only 175-200mg/L K in flower. (You can google alot of diferrent studies showing this is ideal)
The most amount of K comes from the 4ml Canna Aqua Vega wich i‘m going to assume weights about 1kg (part A and B). Ur using 4ml of 8% of the potassiumconcentracion wich is 80 grams times 0,004 (4ml of the 1000ml). thats 0,360 grams or 360mg potassium.
I would recomend to use only half of the pk solution and to get rid of the Canna Aqua Vega and get a second source of Nitrogen. Because its a ratio of 240mg N + 80 mg P + 360 mg K in your solution. Adding the PK and Rhizotonic, which also has NPK (minimal but still there) it‘s just a little to much K. Cannazym has pk too, wich I didn‘t even see.
The second option would be to use about 3ml/L Vega aqua and not use any PK. This would bring down your K to about 252mg/L K with the Rhizotonic.
If your going to use Aqua Flores you are going to have an npk of 4-4-11 wich further lowers your nitrogen and hightens your potassium. Contrary to popular believe, cannabis needs more nitrogen during the stretching phase in flower than people assume. So to keep up with nitrogen you would have to feed alot more potassium than is good. If you cut nitrogen down too much you will have problems with the metabolism so it’s best to keep it above 160mg/L N. That would mean you would have to use again 4 ml (40g of N in solution *4ml =160mg) wich would also contain 440 mg of potassium!
I would get a nitrogen fertelizer and cut down on potassium as much as possible.
I‘m a little Math nerd so i though it might help. 🙏🙏
Sorry hätts auch auf deutsch schreiben können 🤣