Week 6 of flower. Please help :)

harrychilds said:
It looks like a nutrient def. to me, but if you are saying your run off is 1.5 then it is too high.
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I am using the "aggressive strength" feeding chart and up until now its been lush and growing like a sob. I can try flushing and feeding with a lower EC. So would high EC cause lockout and thus a deficiency?
 
Soyesevato said:
I am using the "aggressive strength" feeding chart and up until now its been lush and growing like a sob. I can try flushing and feeding with a lower EC. So would high EC cause lockout and thus a deficiency?
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Yeah from what I understand, Too much nutrients can cause a lockout. I saw a thread about it that dived into detail about it the other day.
 
Soyesevato said:
I use tap that's been through a PUR filter.

And I'm following the gh flora feeding chart
Micro 4.7ml
Gro 4.7 ml
Bloom 5.7 ml
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Soyesevato said:
I use tap that's been through a PUR filter.

And I'm following the gh flora feeding chart
Micro 4.7ml
Gro 4.7 ml
Bloom 5.7 ml
Click to expand...
Those PUR filters add a bunch of unwanted crap to your water. Use straight tap without that filter. My tap is 330ppm before the PUR filter and it goes up over a 100ppm if I run it through the filter and who knows what it’s adding so I think your best to skip the filter. In flower keep your ph at 6-6.2 and as long as your runoff is not higher than 300ppm from the feed solution you shouldn’t have any buildup.
 
Treesomewanted77 said:
Those PUR filters add a bunch of unwanted crap to your water. Use straight tap without that filter. My tap is 330ppm before the PUR filter and it goes up over a 100ppm if I run it through the filter and who knows what it’s adding so I think your best to skip the filter. In flower keep your ph at 6-6.2 and as long as your runoff is not higher than 300ppm from the feed solution you shouldn’t have any buildup.
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My PUR filter tends to reduce ppm by about 100 or so typically. And my run off EC has typically been within the 300ppm range of my feed solution. Any my ph has typically been above 6.0. That's why I thought it must actually be a deficiency rather than a lockout of any kind. Following the feed chart, I did recently lower the feed EC as I started week 6 so I was thinking maybe my ec was too low actually. But seeing how low feed and too high feed can both lead to deficiency it has been hard to determine what my issue is. It doesn't seem to be mold either. Could this be a light issue? They were getting close to the lights so I turned the intensity down somewhat. Sorry for the long response
 
To me, the brown spots def look like calcium deficiency and I'm also noticing the edges of the leaves curling which is indicative of calcium deficiency. And considering my run off EC and PH of my feed solution have been perfect I dont think it's lockout. I'm removing affected leaves, upping calmag temporarily, and will monitor closely for further browning. Upping calmag while keeping EC at 1.3-1.5 will result in less npk so if it is nutrient burn associated lockout, that should resolve as well. Does this sound reasonable?
 
When I first looked at the pics yesterday I didn't think it was calcium because I thought calcium spots were more rusty colored. I'm too lazy to look up a deficiency chart but I was thinking more P or K. I would think at 1.5 EC of GH nutes it shouldn't be a deficiency. It must be getting a little too much of something.

Harry's posts turned on a light bulb for me and I think I am finally understanding coco now.
 
amneziaHaze said:
soo you think after veg and 6weeks of flower a slight nut burn is wrong nutrients? he should maybe use less but its not wrong. wrong would be if it didnt have any macros to sustain life...
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Yeah I don't know everything dude, I'm still learning myself and from what I have learned your run off EC wants to be 1.0 E.C
 
Treesomewanted77 said:
Why would you think PM would be starting? Did I miss something in the photos? I didn’t see any signs of PM but more so wondering does it start when you start seeing leaf issues?
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Maybe it's the lighting but I see faint patches of white on certain areas of the leaves. I also see that the epidermal looks " roughed-up" , " bumpy", irregular in places which also appears with pm. I think this condition is caused from a " hook" that the mold pierces the epidermal layer with. Do you have a scope or a source of magnification ?
 
Treesomewanted77 said:
Why would you think PM would be starting? Did I miss something in the photos? I didn’t see any signs of PM but more so wondering does it start when you start seeing leaf issues?
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I was confusing you with member Soyesevato when asking about magnification , oops . I'm not that wasted , yet .
 
Soyesevato said:
No I don't see any white on the plant, but it looks like Downey mildew can cause brown spots. But they don't seem to have a moldy or dusty texture so I don't believe it's mildew
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I was confusing you with member " Treesomewanted" , who mentioned Downey mildew. Aside from the faint white patches and specs of white I see , the epidermal layer looks compromised in areas....looks " bumpy" , irregular. This condition is the result of the mold's ability to pierce the epidermal. Hope I'm wrong.
 
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