Help..

[John1419]

Problem: yellowing of leaves, red stems

Medium/grow method:
OS/
Feed: and supplements used: Suite Leaf and Roots Organic bar guano.

water source: Tap

Strain/age:Toof Decay and Sour Stomper 37 days old


light used: optic 415

Climate:about 80° RH around 50%

Additional info:The PPMs are about 650..is this too low? Is the red stems normal?

 

[Waira]

need more info about your feeds, NPK#;s dosage, frequency,....
Are the tops mainly the affected areas? Looks like it,... symptoms look like a micronutrient defc starting and maybe Ca defc. too,...
do you pH adjust the feed solution?
... in-pot pH should be checked too, but I betting you don't have a soil pH probe for this,... what your pH is going in is no reflection of what the in-pot pH is, too many influencing factors once in there,... adjusting it before does help maintain proper pH range... look into a good pH probe, Accurate 8 (control wizard products) or identical unit under a different brand name....
Why? pH affects availability of nutrients, if it goes out of range certain nutes will be locked out..... if you feed more to a locked out pot, mattes may worsen, not improve!
As a last crude resort, run-off can be tested with a pH meter, but even that has to be done properly to get some sort of idea about in-pot pH,...

 

[John1419]

need more info about your feeds, NPK#;s dosage, frequency,....
Are the tops mainly the affected areas? Looks like it,... symptoms look like a micronutrient defc starting and maybe Ca defc. too,...
do you pH adjust the feed solution?
... in-pot pH should be checked too, but I betting you don't have a soil pH probe for this,... what your pH is going in is no reflection of what the in-pot pH is, too many influencing factors once in there,... adjusting it before does help maintain proper pH range... look into a good pH probe, Accurate 8 (control wizard products) or identical unit under a different brand name....
Why? pH affects availability of nutrients, if it goes out of range certain nutes will be locked out..... if you feed more to a locked out pot, mattes may worsen, not improve!
As a last crude resort, run-off can be tested with a pH meter, but even that has to be done properly to get some sort of idea about in-pot pH,...

need more info about your feeds, NPK#;s dosage, frequency,....
Are the tops mainly the affected areas? Looks like it,... symptoms look like a micronutrient defc starting and maybe Ca defc. too,...
do you pH adjust the feed solution?
... in-pot pH should be checked too, but I betting you don't have a soil pH probe for this,... what your pH is going in is no reflection of what the in-pot pH is, too many influencing factors once in there,... adjusting it before does help maintain proper pH range... look into a good pH probe, Accurate 8 (control wizard products) or identical unit under a different brand name....
Why? pH affects availability of nutrients, if it goes out of range certain nutes will be locked out..... if you feed more to a locked out pot, mattes may worsen, not improve!
As a last crude resort, run-off can be tested with a pH meter, but even that has to be done properly to get some sort of idea about in-pot pH,...

. These are my nutrients I feed about every4 days here are my npks. Yes I do adjust solution. And dose full strength according to their feed chart. The in pot ph makes sense so I will get one asap and when i would ph my nutrients i would put it at 6.2 6.7

 

[TheOne]

Definitely ph and come back with results, I do see some what appears to be nutrient burn on them as well. Do you use a cal mag supplement? Defficiency in cal and mag can manifest in many ways. I see your using tap water I know with my tap water I usually don’t need cal mag but some strains have needed supplementation

 

[Arthur]

Personal history with ... pH slide 3 weeks into flower. I believe due to the over abundance of peat breaking down in their mix, dragging the pH more acidic as it goes.
Last time I ran it slid into the mid 5s' before i caught it.
Calcium and magnesium are both more available in the 6.5 to 6.8 range.

 

[John1419]

Just ordered a soil ph tester. So hopefully that helps too. I use suite leaf cal mag.

 

[Waira]

...so far so good,.. symptoms worsening? I meant to direct you to the colored section above this one that has the improved run-off pH testing method and calculation... sorry!
Very crudely you can use low ppm water, RO, Di, to saturate the soil, then add enough to generate about a quart of run-off... collect the test sample at the end of that pour, not the beginning, that's when things are super concentrated and accuracy poor,... that collected sample can be tested and if it's way off, at least we know which way it's off and can start correcting things- ... I hoping this is just a simple lack-of type defc., pH is OK, and you can treat with a micronutrient supplement, like Earth Juice Microblast.. nothing but micro's and secondaries in there, no NPK ...
Oh, also, how close is that light? sometime this is caused by LED's being too close, doesn't "burn" like HID, but can damage things, cause bad localized VPD, trigger such defc.'s,... it looks like S (color loss), maybe Ca (spotting) too, which is common in LED.... i can't quite tell, are the margin teeth curled upwards?

 

[John1419]

The light is 24inches away . I'm not sure if I should give the yellow one more nutrients being as though the grower recommendation for Harvest time is 60 to 65 days and I'm on day 53

 

[TheOne]

Judging by the coloring of the leaves I would not increase nutrients, it looks like it’s nearing the end of its lifespan, I think it’s time to let it ride out and see what you get