Yellow spots on leaves. Need help

buzzinga

Member
Hey guys, i am a newbie and am having problems figuring out the problem with my leaves. alot of yellow spots on the leaves and some leaves even have burnt tips. The plant looks healthy overall but the yellowing is really disturbing. I did some research and am guessing either a ph or cal mag problem. I would really love to know what you guys think. Any help would really be appreciated. Thank you.IMG_6307.JPG
 

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Tiffj

Well-Known Member
What is your ph? Don’t think it’s a cal or mag problem, it actually looks healthy, has it got worse or not? Or seem to be getting worse? Either way carry on doing what your doing, could just be related to temp or something minor.
 
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drsaltzman

Well-Known Member
They look good.
I've had the same spots. Never ruined a crop. Never spread.
Could never pin it down either, but suspected nute water drops heating up in the light.
More physical than systemic.
You notice any bugs in your soil?
 

Tim1987

Well-Known Member
Hey guys, i am a newbie and am having problems figuring out the problem with my leaves. alot of yellow spots on the leaves and some leaves even have burnt tips. The plant looks healthy overall but the yellowing is really disturbing. I did some research and am guessing either a ph or cal mag problem. I would really love to know what you guys think. Any help would really be appreciated. Thank you.View attachment 4102283
I usually get this if my ph, ec/ppm's are high.
You're only just locking out.
What medium?
Ph? Adjust
Ec/ppm? Adjust
Good luck
Tim.
 

ANC

Well-Known Member
Nutrient problems usualy display symmetrical marks, like an ink blotch folded in a piece of paper then opened again.
This does not seem to fall in that group.

I'd go with mechanical or insect injury.
 

Tim1987

Well-Known Member
I usually get this if my ph, ec/ppm's are high.
You're only just locking out.
What medium?
Ph? Adjust
Ec/ppm? Adjust
Good luck
Tim.
Check ph. Adjust
Check ec/ppm. Adjust
Always!
Before anything!
Go from there.
Good luck.
Tim.
 

projectinfo

Well-Known Member
Yes I'd say you spilled some of your feed on your leaf.

Foliar feed is usually 1/3 or 1/2 strength. I think, correct me if I'm wrong.

I've seen this a few times, when I'm sloppy trying to feed 18 plants and spill some
 
I' having a similar issue only my girl has dots all over.. 170w cfl, ffof soil, no nutes yet.. water with brita filtered tap ph at6.5 any suggestions? The girl right next to it looks perfect.
 

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Tim1987

Well-Known Member
I' having a similar issue only my girl has dots all over.. 170w cfl, ffof soil, no nutes yet.. water with brita filtered tap ph at6.5 any suggestions? The girl right next to it looks perfect.
Just do the same.
Probably 80-90% of ALL growers' problems is due to overfeeding
Id bet my life on it!!
Follow the steps.
Peace
Tim
 

Tim1987

Well-Known Member
Keep the pots seperate aswell.
Dont let them all sit in each others runoff. Give them their own waste pan. Itll prevent rot from spreading, if there ever is.
Your plants are still seedlings too. Be gentle.
Adjust it all slowly. Over the next week or so.
Give it a little flush. Check readings
Wait a couple days for it to dry. Flush. Check again
Etc, etc.
Until you have it stable.
It doest look too bad.
Good luck
Tim
 
Keep the pots seperate aswell.
Dont let them all sit in each others runoff. Give them their own waste pan. Itll prevent rot from spreading, if there ever is.
Your plants are still seedlings too. Be gentle.
Adjust it all slowly. Over the next week or so.
Give it a little flush. Check readings
Wait a couple days for it to dry. Flush. Check again
Etc, etc.
Until you have it stable.
It doest look too bad.
Good luck
Tim
Will do, thank you
 

buzzinga

Member
Hey, guys thank you all so much for taking out time and helping me out. Back with an update. The problem seems to spread and some of the new leaves have been affected as well. Leaves are becoming darker and feel kinda crisp, brittle, paper-like. Some new leaf tips are coming out curled.
Ph is 6.8/ ppm is 350
Medium is a soilless mix
Using 800w leds/ 32 inches from plant
Advance nutrients 3 part oh perfect Grow,Micro,Bloom and cal-mag plus

Attached some pictures.

Thank you, Really appreciate the help, Cheers :)


IMG_6497.JPG
 

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Beachwalker

Well-Known Member
Hey, guys thank you all so much for taking out time and helping me out. Back with an update. The problem seems to spread and some of the new leaves have been affected as well. Leaves are becoming darker and feel kinda crisp, brittle, paper-like. Some new leaf tips are coming out curled.
Ph is 6.8/ ppm is 350
Medium is a soilless mix

Using 800w leds/ 32 inches from plant
Advance nutrients 3 part oh perfect Grow,Micro,Bloom and cal-mag plus

Attached some pictures.

Thank you, Really appreciate the help, Cheers :)


View attachment 4104362
Do you mean 5.8?
 

Tim1987

Well-Known Member
Hey, guys thank you all so much for taking out time and helping me out. Back with an update. The problem seems to spread and some of the new leaves have been affected as well. Leaves are becoming darker and feel kinda crisp, brittle, paper-like. Some new leaf tips are coming out curled.
Ph is 6.8/ ppm is 350
Medium is a soilless mix
Using 800w leds/ 32 inches from plant
Advance nutrients 3 part oh perfect Grow,Micro,Bloom and cal-mag plus

Attached some pictures.

Thank you, Really appreciate the help, Cheers :)


View attachment 4104362
You have to cut your PPM!
Make sure your runoff is 5.8 or so
Cut any calmag now! Calcium is causing this.
Feed at 200ppm or so, and 5.8.Ph. Flush it through!
MAKE SURE YOUR RUNOFF READS THE SAME!
Let us all know soon.
 
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