Spots on my leaves. ..help I'm confused.

[Jupiter]

... check out that run-off testing and calculation link, mate... it calls for un-pH'ed water to moisten it up, the the final pour to collect run-off calls for RO/Di water, zero hardness,... anything you do to alter the pH will skew the run-off pH,... You did the right thing skipping the HPK! All these symptoms, they started soon after using the Big Up? As a synthetic, it's readily available right off the bat; organics usually need some time to be broken down by the soil herd into absorbable forms,... So, with that input, I wonder about it being a defc. issue, unless it's a lockout situation, meaning the nute's are there, but pH is off enough to render then unabsorbable,... K is pretty robust in wide pH range, but P get's pinched at mid 5's and over 7.5,... More likely, it's toxicity, but again, that's harder to diagnose, especially when symptoms are this advanced,... I don't see the usual tip burn associated with this either,... That pH is key at this point! And if it's toxicity issue, maybe pH as well, a true flush is called for, and doing that r-o test will be going down that road anyway,... In soil, I test for pH all the time, but I use an Accurate 8 soil pH probe, because I dislike the r-o method for several reasons, as stated....another problem with it is, you have to saturate the soil each time you do the r-o test, something the plant does not like, at least not for long,.. roots start to suffocate after 20 min or so, something like that,... no O2! Flushing is done fast as possible because of this, using about 2-3x the pot volume of water, less if it's a minor problem,...

Wow man I'm loving this info. I'm going to do the flush and test the run off but I will be picking up that soil pH tester. I had very faint spots just prior to the Humboldt application but the led lights seem like I can see it way in advance. Its progressed very quickly a few days after I fed.The tips weren't burnt at all but new growth tips seemed to corkscrew. I will monitor my soil ph regularly. What's a good pH level to maintain? I wonder if the micros even have enough time to inoculate the soil or if a tea would be more beneficial. If I can just get a fundamental understanding of the processes at work i would be ecstatic. I do have the cannabis encyclopedia to reference also and that helps out. I'll post my results so you can tell me what you think. Thanks again man for all your help.

 

[IceWater421]

Jupiter- Looks like a few things going on here,... tell me what medium you're in, your nute'/feed dosage/schedule, if you've done any pH testing of medium, adjusting of nute pH,... Symptoms have a mixed look to them: P defc., K defc., maybe Ca too, hard to say,... PK demand is elevated now, in early bloom,...

The doctor is in ( : ( Waira) and you don't even got to leave your pad ( :

 

[Jupiter]

... check out that run-off testing and calculation link, mate... it calls for un-pH'ed water to moisten it up, the the final pour to collect run-off calls for RO/Di water, zero hardness,... anything you do to alter the pH will skew the run-off pH,... You did the right thing skipping the HPK! All these symptoms, they started soon after using the Big Up? As a synthetic, it's readily available right off the bat; organics usually need some time to be broken down by the soil herd into absorbable forms,... So, with that input, I wonder about it being a defc. issue, unless it's a lockout situation, meaning the nute's are there, but pH is off enough to render then unabsorbable,... K is pretty robust in wide pH range, but P get's pinched at mid 5's and over 7.5,... More likely, it's toxicity, but again, that's harder to diagnose, especially when symptoms are this advanced,... I don't see the usual tip burn associated with this either,... That pH is key at this point! And if it's toxicity issue, maybe pH as well, a true flush is called for, and doing that r-o test will be going down that road anyway,... In soil, I test for pH all the time, but I use an Accurate 8 soil pH probe, because I dislike the r-o method for several reasons, as stated....another problem with it is, you have to saturate the soil each time you do the r-o test, something the plant does not like, at least not for long,.. roots start to suffocate after 20 min or so, something like that,... no O2! Flushing is done fast as possible because of this, using about 2-3x the pot volume of water, less if it's a minor problem,...

So I did the run off test. The only thing is I used bubbled filter water instead of Di. Hopefully it didn't affect the outcome. My pH going in was 6.5, I let it sit for about 45 min. and then ran some more water through it. Collected a sample and it was 6.4/6.3. It was bouncing up and down. My e.c. was 0.9. I also ordered a accurate 6 soil ph tester which is coming in tomorrow. Worst case I'll get a more accurate reading with that and then we can go from there. Thanks

 

[Waira]

...mid-to low 6's is best for true soil,... Okay, even with that water, the results are better than I thought, margin of error and all! Most filters, unless specifically made to remove carbonate minerals, won't do much for water hardness, but will knock the EC down some; it's the carbonate minerals that are involved with pH buffering... EC is better than expected too,.. Dude, I'm kinda stumped-- the pH is likely about 6.0, not bad at all, not problem causing- certainly not any nute' lockout; the EC says there's not an overload of dissolved ions either, at least now, putting toxicity into doubt- ...have symptoms progressed, or slowing down? Are you using a Ca-Mg supp'? Shoot me some fresh pics please,...

 

[Jupiter]

...mid-to low 6's is best for true soil,... Okay, even with that water, the results are better than I thought, margin of error and all! Most filters, unless specifically made to remove carbonate minerals, won't do much for water hardness, but will knock the EC down some; it's the carbonate minerals that are involved with pH buffering... EC is better than expected too,.. Dude, I'm kinda stumped-- the pH is likely about 6.0, not bad at all, not problem causing- certainly not any nute' lockout; the EC says there's not an overload of dissolved ions either, at least now, putting toxicity into doubt- ...have symptoms progressed, or slowing down? Are you using a Ca-Mg supp'? Shoot me some fresh pics please,...

They seemed to basically finish off the leaves and stop. I gave it cal/mag with the feed, mixed it first then added the nutrients. I probably should've done more applications of cal/mag. Basically wherever there were spots on the leaves they ended up turning yellow and you see the final results. They did start off green with little rust spots.

 

[Waira]

..those aren't Ca type spots, but Ca is involved with facilitating uptake of other nutes,... it's hitting high up too, which usually is a sign on an immobile nute' invloved,.. I'll check something out, and BBL after dinner!

 

[Jupiter]

..those aren't Ca type spots, but Ca is involved with facilitating uptake of other nutes,... it's hitting high up too, which usually is a sign on an immobile nute' invloved,.. I'll check something out, and BBL after dinner!

Yeah it almost looks like manganese I guess lol. This is so difficult. If this helps the humidity was around the high 30s to low 40s.

 

[Waira]

:smoking:..yeah, I thought of that too, it sure as hell does-- but it's so damn rare, as a micronutrient defc.,... only tiny amounts needed, and quality fert's have it in there, but you never know,... Earth Juice Microblast makes a fine product, organic-- worth a try!... But what you describe, starting off with scattered little rust spots is classic Ca defc. symtpom... so often, one problem leads to another, as many of these individual elemental nute's are tied to others for uptake facilitation, or can be blocked out by too much of others,.. gets messy fast, especially with symptom manifestation! ..yeah, hammered leaves usually get tapped out and dumped by the plant, no reversal of symptoms in most cases, in fact....

 

[Jupiter]

:smoking:..yeah, I thought of that too, I sure as hell does-- but it's so damn rare, as a micronutrient defc.,... only tiny amounts needed, and quality fert's have it in there, but you never know,... Earth Juice Microblast makes a fine product, organic-- worth a try!... But what you describe, starting off with scattered little rust spots is classic Ca defc. symtpom... so often, one problem leads to another, as many of these individual elemental nute's are tied to others for uptake facilitation, or can be blocked out by too much of others,.. gets messy fast, especially with symptom manifestation! ..yeah, hammered leaves usually get tapped out and dumped by the plant, no reversal of symptoms in most cases, in fact....

I wonder if putting that synthetic booster was like a catalyst idk. It's so much more concentrated than my other nutes. I'll check my notes but I might have cal/mag this plant more than usually in the beginning so I wonder if that did anything. Anyways thanks for all the help and your quick response. Much appreciated and keep up the good work.