Hello everyone! I couldn’t find a solution to my problem in older topics, so I decided to create a new one.
This is my 3rd cycle in aeroponics and i’m still trying to adjust my tecniques.
I have 4 Skunk Kush from Sensi Seeds growning in aeroponics, in a 1x1m growbox, Amazon aeroponic system, I keep pH between 5.2-5.5 in vegetative and 5.8-6.1 in flowering. I use Canna Aqua A+B, PK13/14, Rhizotonic, Cannazym, Mineral Magic and Michorryzae. I’m having problems with my ECmeter, but I should be around 1.8-2.0mS and I change the solution every 2 weeks. Every day I refill with 5lt water with 3-3.5 ml of pH down and 10ml Canna Aqua Flores.
Air temperature is currently 31°C by “day” and 25-26 by “night”, humidity bout 65%. I’m keeping irrigation always running, so it’like having a humidifier. I run 3 led lights, rated each 300, 450, 1500W, but 500W consumed in total.
I am currently 3weeks away from end of flowering, but I repeatedly encountered this problem over the cycles.
Lower leaves slowly present rust spots, burnt edges, yellowing from the outside to the inside, finally drying up and falling. In flowering the spots and burnt edges climb up the plant, currently they’re affecting the middle fan leaves,
I tried adding mineral magic, for a calcium-magnesium deficiency, calcium nitrate, adding PK13/14, lowering and raising EC. Lately I also found out that I have some guests, piercing the leaves, so maybe they’re accountable too.