Yellow spots on some leaves

K

K5Doom

Member

• Jun 11, 2013

• #1

Hi,

This started maybe 2-3 days ago, 2 of my plants have some minor yellowing and the yellow leaves are kinda dry. What could cause this?

I'm growing in Coco, under 200W CFLs + 100W LEDs.

I thought it could maybe be nutes burn, so I flushed the one pictured earlier today. Also, the teared leaf was my accident, I tore it by mistake.

Thanks!

 

ciscoin313

Member

• Jun 11, 2013

• #2

Looks like it nute burn to me or maybe to much water? Provide the feeding info to better assist you...

 

K

K5Doom

Member

• Jun 11, 2013

• #3

I feed when the coco starts to get dry on top and/or when the smartpot gets light, I don't have a specific feeding schedule. I give it approx 7.5 mL of A + 7.5 mL of B mixed in a gallon of water. Not too sure if that's alright.

 

ciscoin313

Member

• Jun 11, 2013

• #4

I dont know if its right also, what type of nutes are you feeding them? Canna? I not familiar with Canna products but try and go less is what I do and see if you have any changes after a wk. I wish I could help more but not enough info to work with, hanf tight someone will have more answers.

 

K

K5Doom

Member

• Jun 11, 2013

• #5

I bought the nutrients from my local hydro shop, they are made locally and they said that it's pretty much the same as Canna, but much cheaper. I can take a pic of the label if necessary.

I'll try to feed them a bit less for sure.

Here: http://i.imgur.com/VZCb5eu.jpg

 

twostrokenut

Well-Known Member

• Jun 11, 2013

• #6

The one you tore you can just cut off, makes you plant look healthier and looks a little crowded under there anyhow.
Taking a pic of the label might not be as good as just transcribing it...but its totally necessary to tell people what they are asking for so they can try and help.

 

HotShot7414

Well-Known Member

• Jun 11, 2013

• #7

Thats not nute burn (Notice how on some leaves the leaf tips are not burned).That looks like a Ph issue what is your PH.i can say maybe %80 of the time it's the PH that causes deficiencies even if fed properly.

 

TheSnake

Well-Known Member

• Jun 11, 2013

• #8

Maybe too much water, maybe ph, maybe burn. My plants go through phases of fucked up leaves a lot, all i do is make sure my water PH is 6.5 or around there (color chart ph method, getting a pen in mail soon to know exact point ) Let things dry out a few day's in case it was over watering, and make sure my nutes are nice and deluted to 50-60, 70 % ... Should be fine after that, the leaves infected may never look normal again even after correction, as long as the top of the plant is not all fucked up looking, wouldn't worry too much.

 

K

K5Doom

Member

• Jun 11, 2013

• #9

As for pH, when I dilute my nutes in my 4L of water, it usually comes at 6.2-6.3 but then I adjust it to about 5.6 with pH down, then feed the plants.

Btw I use paper pH strips

I edited my other post for a pic of the nutrients label.

Edit: Took a sample of the coco at about 2 inches deep, dilituted a few mL of tap water, took the pH reading. It's approx 6.0 (color code is not that easy)