Leaves yellowing with marks please help

OROG · May 1, 2021

Hi I grow 4 gelato auto under 600w hps 24 hours light with steady 24c 50%~60% rh
I’m using advanced nutrients and feeding quarter of recommended dose
The plants are 34 days old and since approximately 10 days ago leaves started yellowing and having marks and spots it started from the bottom and climbing I water them 2 liters every 3 days approximately I thought it’s cal mag problem but two waterings in a row I feed calmag and it still climbing up almost reached the tops the plant keep on flowering regularly and beside it getting yellow and marks and the low leaves got rusty funnily it still flourishing what do you think guys please help me

Justlovetogrow · May 1, 2021

Have u checked your runoff ph that could be it?

OROG · May 1, 2021

Justlovetogrow said:
Have u checked your runoff ph that could be it?

It’s auto and I grew it from the beginning in 18 liter pot so only in the next watering I thought about watering them enough to get runoff
I was wrong doing like that?
the plant is only month old I was afraid of overwatering

Justlovetogrow · May 1, 2021

Is it grown in coco?

lvstealth · May 1, 2021

what soil are you using?

OROG · May 1, 2021

lvstealth said:
what soil are you using?

Soil mixed with perlite

Justlovetogrow · May 1, 2021

Oh I haven’t done soil indoor but I’m pretty sure u don’t water to runoff with soil someone else on here with more soil experience will let u know I’m sure.

lvstealth · May 1, 2021

see how the leaves are curled down at the tips and many tips are yellow... dont know what that means, but it means something.

i was thinking that if you used a soil with stuff in it, then added more stuff, you might be over "stuffing" it.

lvstealth · May 1, 2021

watering to runoff , meaning water till you get a percentage of what you put in out the bottom. as i understand this, you then measure for ppm and are hoping for some correlation. so, no... not so much like that for soil.

what type soil? is it buffered (most are)? does it have any "living" attributes? compost? all these things matter for what you are adding to it. it is (for the most part, or at least a way to look at it in simplicity) cumulative, each thing might alter or totally change another thing and that alters some totally other thing.

OROG · May 1, 2021

lvstealth said:
watering to runoff , meaning water till you get a percentage of what you put in out the bottom. as i understand this, you then measure for ppm and are hoping for some correlation. so, no... not so much like that for soil.

what type soil? is it buffered (most are)? does it have any "living" attributes? compost? all these things matter for what you are adding to it. it is (for the most part, or at least a way to look at it in simplicity) cumulative, each thing might alter or totally change another thing and that alters some totally other thing.

It supposed to be clean soil mixed with perlite specially made for cannabis

lvstealth · May 1, 2021

clean means what? and clean and made for cannabis sort of sound different. if it was made for, then it has certain compositional attributes that make it made for. if one is compost, then itmight be rich or hot, if it has worm castings or sea weed or who knows what in it it has something in it. even just dirt isnt just dirt. some lean sandy, some loamy, some peaty... so, that matters.

so, by clean soil you might mean potting soil? special for cannabis, maybe means ph neutral? that means it is more than likely buffered. i was looking for a name, i could research and find what is what.

by the way, i know nothing, just been really studying up on soil since i use it. so if any of the other folks with experience, the for real kind, not like my book learning stuff, say contrary or differing views, id listen to them (or at least google the shit out of it!)

good luck! you sure these are only 4 weeks old? they are already flowering!

Thejdubbs · May 1, 2021

Hey OROG, If you are able to, answer these questions to the best you can. will be helpful for those trying to help you and save some back and forth questions. I know you’ve already answered a few.

soil growers:
1. Are you growing from seed or clones?
2. How old are your plants?
3. How tall are your plants?
4. What size containers are they planted in?
5. What is your soil mix?
6. How often do you water and what type of water do you use?
7. What is the pH of your water?
8. What kind of fertilizer do you use and what is its NPK ratio?
9. Do you foliar feed or spray your plants with anything?
10. What kind of lights do you use and how many watts combined? (HPS, MH, fluorescent, halogen, incandescent "plant lights")
11. How close are your lights to the plants?
12. What size is your grow space in square feet?
13. What is the temperature and humidity in your grow space?
14. What is the pH of the soil?
15. Have you noticed any insect activity in your grow space?
16. How much experience do you have growing?

Fill that out and post back if possible. And here is a good thread to start with in the mean time until people are able to chime in.

Cannabis Plant Nutrition and Visual Diagnosis

How to identify and treat nutrient deficiencies — A cannabis deficiency is seen when the cannabis plant is unable to access a key nutrient or mineral ..

www.thcfarmer.com

scroll down to the visual diagnosis
Hope this helps.

OROG · May 1, 2021

lvstealth said:
clean means what? and clean and made for cannabis sort of sound different. if it was made for, then it has certain compositional attributes that make it made for. if one is compost, then itmight be rich or hot, if it has worm castings or sea weed or who knows what in it it has something in it. even just dirt isnt just dirt. some lean sandy, some loamy, some peaty... so, that matters.

so, by clean soil you might mean potting soil? special for cannabis, maybe means ph neutral? that means it is more than likely buffered. i was looking for a name, i could research and find what is what.

by the way, i know nothing, just been really studying up on soil since i use it. so if any of the other folks with experience, the for real kind, not like my book learning stuff, say contrary or differing views, id listen to them (or at least google the shit out of it!)

good luck! you sure these are only 4 weeks old? they are already flowering!

The store says it’s and real low ec soil mixed with perlite and ph balanced with perlite and nothing more

lvstealth · May 1, 2021

Ok, so, ph balanced. Good, it's buffered. EC, that's conductivity? So measuring for salts? Unless it's used or maybe topsoil or farm dirt it shouldn't have salt buildups, right?

I can't help with that info, sorry. Usually I can go through the soil report or the data on the bag or like that.

Hope it goes great! Good luck!

GNick55 · May 1, 2021

what you have is leaf septoria and it looks like it was caused from overwatering, maybe a couple other things, just leave her be as i’m getting really stoned at the moment, i’m sorry but wow..
i’ll help tomorrow if no one else does..

lvstealth · May 1, 2021

The spots are along the veins! I just noticed that.

Normally that's not fungal. Fungus is more random. So maybe not septoria?

Maybe a lockout of some sort, due to over water maybe?

TSD · May 1, 2021

Is 24 hours light normal for autos? I know nothing of them, but it seems all living things need to rest... Are you saturating the soil and then letting it dry, could it be under watering? That's a big pot.

OROG · May 2, 2021

I water it approximately once 3 days and let it dry yesterday after consulting with people I flushed the soil a bit and lowered its ppm which was very high I hope it will help

Backyard_Boogie · May 2, 2021

OK so heres the deal brother what you are looking at is likely not a death sentence for your plant. You should be fine so long as all the newer growth up top is healthy. Notice its the oldest and largest water leaves way down at the bottom of the plant that are experiencing the issue. What happened is way back when your plant was a little guy there was likely an overwatering issue that caused this. As the plant grows bigger it becomes more resilient and robust and it will overcome the watering issue and keep growing. The new stuff up top will be good but those older leaves at the bottom that had to "ride through the overwatering storm" will be the ones that show the damage. Not a big deal at all I have seen this on many plants. So long as the newer growth is coming in nice all you do is pluck off those old ugly leaves on the bottom. They are not photosynthesizing anyways and are dead and could lead to PM issues. Just pinch off the ugly and let it go. Trust me when I say DO NOT start to over diagnose this and throw the kitchen sink at it, you can do more harm than good. Just defoliate the dead shit and keep doing what your doing

OROG · May 2, 2021

Backyard_Boogie said:
OK so heres the deal brother what you are looking at is likely not a death sentence for your plant. You should be fine so long as all the newer growth up top is healthy. Notice its the oldest and largest water leaves way down at the bottom of the plant that are experiencing the issue. What happened is way back when your plant was a little guy there was likely an overwatering issue that caused this. As the plant grows bigger it becomes more resilient and robust and it will overcome the watering issue and keep growing. The new stuff up top will be good but those older leaves at the bottom that had to "ride through the overwatering storm" will be the ones that show the damage. Not a big deal at all I have seen this on many plants. So long as the newer growth is coming in nice all you do is pluck off those old ugly leaves on the bottom. They are not photosynthesizing anyways and are dead and could lead to PM issues. Just pinch off the ugly and let it go. Trust me when I say DO NOT start to over diagnose this and throw the kitchen sink at it, you can do more harm than good. Just defoliate the dead shit and keep doing what your doing

Thanks a lot for calming me down if you say it’s overwatering I hope the flush won’t make it worse but at least I learn

Leaves yellowing with marks please help

Leaves yellowing with marks please help

OROG

Justlovetogrow

OROG

Justlovetogrow

lvstealth

OROG

Justlovetogrow

lvstealth

lvstealth

OROG

lvstealth

Thejdubbs

Cannabis Plant Nutrition and Visual Diagnosis

OROG

lvstealth

GNick55

lvstealth

TSD

OROG

Backyard_Boogie

OROG

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