need advice. yellowing between veins

hello RIU, need help to diagnose problem.
yellowing started from new grow, but as you can see some old leaves are effected too and some start browning.
plant is in soil and PH meter (chinese one, not sure about accuracy) says ph is about 7.
it looks like iron def but googling other growers iron deficient plants not sure anymore.

need advice from advanced growers to save my first plant from dying.

Could be magnesium or over feed too

luiji said:

Could be magnesium or over feed too

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my friend says excess P can block iron, mag, and Zinc but i can not test P in soil...

looks like potassium deficiency....

...you can try using a bloom fertilizer that is water soluble, or wood ash, liquefied kelp, potassium sulfate, potassium bicarbonate, potassium silicate, or potassium dihydrogen phosphate...

good luck

what are you currently feeding? if it is a complete system already adding anything wont help right

how often have you been watering her? are you letting her soil dry out at all? ph in soil really doesn't matter so i wouldn't worry about ph

chemphlegm said:

if it is a complete system already adding anything wont help right

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why not?

ManBat said:

looks like potassium deficiency....

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from top to down? doesnt potassium def start from old leaves?

undercovergrow said:

how often have you been watering her? are you letting her soil dry out at all?

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once a week maybe, when top looks and feels dry.

lilsativa said:

once a week maybe, when top looks and feels dry.

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so what is her soil like when you do that? how big of a container is she in? can you lift it and feel she is light and then heavy after watering her in it?

^^^^^^^^^^^^^^^^^^^^^^^^^This is something to consider. Are they root bound? Do you have good drainage?
TBH it looks like nute burn to me. Chem is right, you can't FORCE a plant to take up nutes. Too much CAN be a bad thing.
What type of soil is it? Does it have nutes in it? Is it Organic? Is it amended?
Also, why does everyone want to keep their plants so dry? I keep my soil moist and the ladies love it.
Good Luck!
WE

"if it is a complete system already adding anything wont help right"

lilsativa said:

why not?

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because its already a complete system. If there's a lock out its not because it needs more of whats already in the food you feed it. make sensi? A plant grows to its weakest resource not its strongest.

again, what are you feeding ?

@Wilderb - my soil dries out for exactly four seconds, then I fully water it once again. repeat

undercovergrow said:

so what is her soil like when you do that? how big of a container is she in? can you lift it and feel she is light and then heavy after watering her in it?

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its approximately 3 gals(11 liters) and yes I can lift it. i'm sure when top 1 inch is dry bottom is still wet, but I dont let it dry out completly.

Wilderb said:

Are they root bound? Do you have good drainage?
TBH it looks like nute burn to me. Chem is right, you can't FORCE a plant to take up nutes. Too much CAN be a bad thing.
What type of soil is it? Does it have nutes in it? Is it Organic? Is it amended?

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drainage is good and root bound is present(is it a problem?), when I planted soil was organic from local garden shop, later I started to add some N rich NPK wanted to boost grow

chemphlegm said:

because its already a complete system. If there's a lock out its not because it needs more of whats already in the food you feed it. make sensi? A plant grows to its weakest resource not its strongest.

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maybe I can find out and tweak that weak resource with your help?
I cant figure out should I flush it? or should I add some more nutes? maybe PH down ?

lilsativa said:

its approximately 3 gals(11 liters) and yes I can lift it. i'm sure when top 1 inch is dry bottom is still wet, but I dont let it dry out completly.


drainage is good and root bound is present(is it a problem?), when I planted soil was organic from local garden shop, later I started to add some N rich NPK wanted to boost grow


maybe I can find out and tweak that weak resource with your help?
I cant figure out should I flush it? or should I add some more nutes? maybe PH down ?

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again...what exactly are you feeding it right now, in the past too? without that you are on your own sorry
this will fix it all for you. http://catnews.org/FREE Pot Books/

lilsativa said:

its approximately 3 gals(11 liters) and yes I can lift it. i'm sure when top 1 inch is dry bottom is still wet, but I dont let it dry out completly.


drainage is good and root bound is present(is it a problem?), when I planted soil was organic from local garden shop, later I started to add some N rich NPK wanted to boost grow


maybe I can find out and tweak that weak resource with your help?
I cant figure out should I flush it? or should I add some more nutes? maybe PH down ?

Click to expand...

Was is showing any deficiency when you started to feed it? You cannot "boost" it by adding more nute than it needs/wants.
Also, if it is rootbound, you may want to water it more. That means that most of the area is taken up by the roots, nothing to hold the moisture in. Will only be able to take up nutrients if moisture is present.
Speaking of water, what are you using? What is the ph of the water itself? Using hard water can bring it's own problems to the mix.
TBH, I would just water it for week or so. COVER the top of your soil and it will stay moister, making the micro heard in your soil do the work it's supposed to do.

Also, how old are they? Re-potting might be consideration.
Learn about he soil web and most of your problems will disappear!
Good Luck
WE

Looks like mag def. I would not be using a clear container as a pot. Do you have good drainage holes? What makes you think she's root bound? She doesn't look big enough, how long was she vegged for in that pot/plastic tub?

chemphlegm said:

again...what exactly are you feeding it right now, in the past too? without that you are on your own sorry

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Was feeding with liquid organic NPK 4-2.5-1 which has ph of 8.5, i was adding this to water(water ph 7 ) everytime.
last watering was water only.

Wilderb said:

Was is showing any deficiency when you started to feed it? You cannot "boost" it by adding more nute than it needs/wants.
Also, if it is rootbound, you may want to water it more. That means that most of the area is taken up by the roots, nothing to hold the moisture in. Will only be able to take up nutrients if moisture is present.
Speaking of water, what are you using? What is the ph of the water itself? Using hard water can bring it's own problems to the mix.
TBH, I would just water it for week or so. COVER the top of your soil and it will stay moister, making the micro heard in your soil do the work it's supposed to do.

Also, how old are they? Re-potting might be consideration.

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water ph is 7 and i did not adjusted it. should i make it 6? and yes its hardwater, but don't know exact ppm.
its 40-45 days old. will re-potting add extra stress? is it possible that issue is caused by pot size?

coreywebster said:

Looks like mag def. I would not be using a clear container as a pot. Do you have good drainage holes? What makes you think she's root bound? She doesn't look big enough, how long was she vegged for in that pot/plastic tub?

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thought clear container was better for me to see roots will fix it next repotting, drainage is good.
its about month in that container.

Hard water CAN have issues. Depending on what's dissolved in it, it can lock out certain nutes. Can't say for sure.
I would water more than you feed. I think you have nute lock out.

Are you in flowering? If not, I would pot up. And as Corey mentioned, don't use clear. Roots want dark. Also, put something over the soil top to mulch it. Even cardboard scraps will work. Will save alot of trouble in the watering department because you won't be evaporating the top off.

They really just look slightly over loved.

Learn to let the plant tell you what it wants. Growing becomes much easier once you do that. Soil web. Learn about it.
Good luck!
WE

ok guys, first of all I want to thank all of you for your input, I suppose it was already too late when I created this thread.
unfortunately watering only without nutes did not help. issue progressed and tops started to wilt.
only reason i know for that is underwatering, but it was't the case.

so I decided to flush it.

Ok heres your issues...your ph is fucked. Your soil ph should be between 6.5-6.8 ideally. You have to correct your ph to help your plant. Your high ph is locking out things your plant needs. Flushing with un ph'd water will only exasperate the issues.

lio lacidem said:

Your soil ph should be between 6.5-6.8 ideally

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is 7 too high ph?