Quote:
Originally Posted by oregon bob
I agree w the initial poster that pH lockout is the core issue. The way it is yellowing appears more like K vs N as it is also w some curl & stem/vein purpling. The spots, though out of focus, appear more like those that result from rapid and/or wild pH shifts vs necrosis from def. You mentioned high pH, which will prevent some of your micros from being available.
My further guess is that the pH lockout is in part due to higher than normal ppm's within the medium. Some of the back leaves in the pics are hooked which is usually a sign of overdose on my part, though overwatering can have a similar effect.
See, there really isn't a simple answer & not being makes it really tough. Those pics sure do help though. Let me know. Best brah
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I was the initial respondant in the first thread...the reason I went with ph lockout is that my sativa (unknown bag seed) looked
exactly the same. Also, this grower (I believe?) says he's giving nutes with
every water - right? That does not look like nute "burn" it looks like lockout IMHO. The sativa I have that needed flushing looked a tad "pissed" for a day or two (mildly droopy), then improved rapidly. She's now almost 6 feet tall and covered in buds. She's drinking about 2 liters of water or water mixed with nutes (gets nutes every other water at 1/4 to 1/2 strength) every other day (thirsty girl
). She also gets a weak dose of cal/mag maybe every third or fourth watering.
Before I started reading here (thanks to all you experienced growers) I didn't even know to check on my ph. I now have a nice ph meter, and NO water goes on those plants before being checked and regulated with ph down. The cause of my nute lock?...ph of 9+ coming out of the faucet!! The hubby and I flushed with 6.5 ph water equaling 3 times the dirt volume, and as stated above, the sativa has been doing fine since. The indicas were flushed as well because they had been getting the same high ph water (even though it didn't really look like they needed it).
If you do decide to flush, just make sure your container has PLENTY of drain holes.
Best of luck!