Yellow spots on leaves. Need help

buzzinga · Mar 8, 2018

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.

Tiffj · Mar 9, 2018

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.

drsaltzman · Mar 9, 2018

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?

projectinfo · Mar 9, 2018

Did you spill nutrients on your leaves.

drsaltzman · Mar 9, 2018

projectinfo said:
Did you spill nutrients on your leaves.

Sometimes.
Especially watering them when they're younger, shorter.
Not straight nutes. Or foliar feeding.
Water with nutes in it. Sometimes heat and water can damage the leaf.

Tim1987 · Mar 9, 2018

buzzinga said:
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 · Mar 9, 2018

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 · Mar 9, 2018

Tim1987 said:
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.

drsaltzman · Mar 9, 2018

Bottom right.
Current grow.
Physical.
Not systemic.

projectinfo · Mar 10, 2018

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

ThatCrispyKid · Mar 10, 2018

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.

Tim1987 · Mar 10, 2018

ThatCrispyKid said:
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

ThatCrispyKid · Mar 10, 2018

Tim1987 said:
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

Thank you.. good deal that's all I wanted to hear is that it's most likely not a disease that' gonna effect my other girls lol

Tim1987 · Mar 10, 2018

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

ThatCrispyKid · Mar 10, 2018

Tim1987 said:
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

Tim1987 · Mar 10, 2018

ThatCrispyKid said:
Will do, thank you

Welcome brotha
You're pretty in check.
Good luck. Healthy gro.
Tim

Beachwalker · Mar 10, 2018

I have those same marks on one or two lower leafs on 1 of 2 unknown freebies of GG, the new growth doesn't seem to have them, transplanting in about a half an hour, will grab a picture then
-good luck!

buzzinga · Mar 12, 2018

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

Beachwalker · Mar 12, 2018

buzzinga said:
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 · Mar 12, 2018

buzzinga said:
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.

Yellow spots on leaves. Need help

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