Om het hieronder te vereenvoudigen. Je ervaart een tekort aan kalium en fosfor. Waarschijnlijk is de reden dat ze niet genoeg krijgen omdat ze te veel stikstof opnemen, wat de toegang tot pk verhindert. Je moet spoelen, probeer de pH te verhogen naar 6-6,5 en verander de voeding naar minder N en meer pk. :seedling::+1:
Hello there! Got some burning, browning and furling going on there, I see. Let's talk about it😃
I know your EC is at 1.3 right now, but let's just ignore that number and face the problems we see above ground. I'm a numbers guy and have been through this myself. Was over-emphasizing the importance of the numbers instead of tackling the visible symptoms I had. You see, even if our EC reading are coming back "optimally" it doesn't tell you what the plant is actually taking up. EC might be perfect, but if there is a pH maladjustment you will start to see problems as the plant may start to take up the wrong macro and micro nutrients you've applied. Let's say your pH is 5.7 and you're feeding phosphorus for flower. You can poor as much blooming agent in as you want, but with the out of whack pH the plant may not be taking it up. This could very well be why your ec meter is on par but the plants are showing clear signs of deficiency. They're just not taking up what they should and taking more of what they shouldn't. You know?
Perceived issues: Going to need to change your feeding schedule somewhat to balance this girl out. Right off the bat, I see what looks like mostly a Potassium deficiency by the way the leaves are browning and curling from the tip of the blades and leaflets, moving inwards. I will also take a guess and say there is probably a Phosphorus deficiency (Red stems), probably coupled with low Cal/Mag (P/Cal work in close conjunction with one another). From the shade/hue of some of your leaves, I would also wager you may be seeing some Nitrogen Toxicity starting (which would actually make sense).
I know that sounds like a lot, but you're good and everything should be ok👍. I suggest doing a "flush through" with your P/K/Cal and Mag supplements and cut the Nitrogen all together for one feed, at least. From your above info I see your pH is 5.8 which is optimal for some micro/macro nutrients but not ideal for the P/K/Cal. She may very well just be taking all the nitrogen, zinc, copper, iron etc... (that are taken up at 5.8) and interrupting the uptake of the essential nutrients she needs. "Flushing through" with nutrients and a good amount of water will wash out the old residual salts you don't want without starving her of the P/K/Cal she is desperately looking for right now. Don't want to fix one problem only to create another. In your RO readings from hear on, I would focus less on the ec and more on the pH. To get the girls back to health pH must be addressed first, trust me. After 1-2 consecutive flush throughs, you should notice your pH balance out and the symptoms' halt/pull back. The affected leaves are done for, but from here on out you shouldn't be seeing the same thing happening again if that pH is in order and she's getting a good dose of that P/K/Cal and Mag.
Damn, that sounds like a lot and I hope none of that overwhelms you man. I feel you'll be just fine and so will the girl, she just needs a little tweaking is all. Sorry for the essay long response. If you need anything else that I might be able to help you with, drop me a line in PM. Cheers my friend, and good luck👍😉
