Possible deficiencies?

Alctrz8849

Alctrz8849

Well-Known Member
Hard to tell without more info but your leaves near the top look like they could be experiencing light burn but more info would help. PH in soil, PPM in you run off, temp, etc..
 
C

Cannaman11

Member
Ppm in run off is
Alctrz8849 said:
Hard to tell without more info but your leaves near the top look like they could be experiencing light burn but more info would help. PH in soil, PPM in you run off, temp, etc..
Click to expand...
ppm in runoff is around 600 and the oh is 6.6. Temp is around 71-75 usually. Led Light is 18” away on %80 power
 
Alctrz8849

Alctrz8849

Well-Known Member
Cannaman11 said:
Ppm in run off is

ppm in runoff is around 600 and the oh is 6.6. Temp is around 71-75 usually. Led Light is 18” away on %80 power
Click to expand...
What is are the umols and PPF rating on your light? I just experienced light burn myself and the leaves near the top look tired and old when it happens and your issue only seems to be near the top. If it's a deficiency possibly zinc and it's simply time for another normal feeding. I do DWC though and am no expert for soil or coco. The other reason I wonder if light burn could be an issue is because when I zoom in I see the edges of your leaves showing mild signs of 'burn' too. If it is light urn it ain't bad and will recover. Let us know if you do nail it down! Good luck!

Also agree on the not stripping of any fan leaves! They act as a buffer in addition to being the main food producer for the plant!Leaf.PNG
 
C

Cannaman11

Member
Alctrz8849 said:
What is are the umols and PPF rating on your light? I just experienced light burn myself and the leaves near the top look tired and old when it happens and your issue only seems to be near the top. If it's a deficiency possibly zinc and it's simply time for another normal feeding. I do DWC though and am no expert for soil or coco. The other reason I wonder if light burn could be an issue is because when I zoom in I see the edges of your leaves showing mild signs of 'burn' too. If it is light urn it ain't bad and will recover. Let us know if you do nail it down! Good luck!

Also agree on the not stripping of any fan leaves! They act as a buffer in addition to being the main food producer for the plant!View attachment 4891384
Click to expand...
My light @ 100% is 750 ppfd at 18”
 
Alctrz8849

Alctrz8849

Well-Known Member
That was right on the edge for my plants, I moved the lights up and the problem went away. Each plant is different and I've noticed varying sensitivities between the four plants in my current grow. I bought my lights because they are used commercially but I realized as good as my set up is I do not have a commercial set up and would need to pipe in C02 to utilize the maximum PPFD the MFRs advertise as well as some other minor things too. I keep my PPFD at 650-700 tops and my plants are chugging along and my PPM at 800-1100. 700PPM is ok as long as it's a day or so before water change but is what my plants start showing deficiencies at.
 
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