What is making the leaf look like this?

labratlee

Well-Known Member

• Sep 11, 2015

• #1

Hey there,

got a few leave appearing like this at the top of the plant. They are not a nice even green like the rest. Read stems too. Its an autoflower ("think different") 6 weeks old from seed. Growing in soil. 400w hps.

any more info needed feel free to ask.

I just wanna get this sorted.

cheers in anvance.

peace

 

labratlee

Well-Known Member

• Sep 11, 2015

• #2

 

labratlee

Well-Known Member

• Sep 11, 2015

• #3

under side of leaf

 

labratlee

Well-Known Member

• Sep 11, 2015

• #4

matks on the leaf as well as being pale green/yellow.

 

chuck estevez

Well-Known Member

• Sep 11, 2015

• #5

bet you're using distilled water?

 

labratlee

Well-Known Member

• Sep 11, 2015

• #6

pics taken with better camera

 

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labratlee

Well-Known Member

• Sep 11, 2015

• #7

chuck estevez said:

bet you're using distilled water?

Click to expand...

nope, tap water let sit a couple of days and ph'd.

 

chuck estevez

Well-Known Member

• Sep 11, 2015

• #8

labratlee said:

nope, tap water let sit a couple of days and ph'd.

Click to expand...

are you feeding them anything?

 

Jimdamick

Well-Known Member

• Sep 11, 2015

• #9

It looks to me to be a N def, especially at 6 weeks. Other causes could be a PH imbalance, which is affecting nute take-up, or as simple as a calcium def. What I would do is add come Calmag plus to your feed water, which contains Nitrogen, and make sure your water is 6.5. If needed do a flush to bring your soil back as close as possible to 6.5. Good luck

 

labratlee

Well-Known Member

• Sep 11, 2015

• #10

Jimdamick said:

It looks to me to be a N def, especially at 6 weeks. Other causes could be a PH imbalance, which is affecting nute take-up, or as simple as a calcium def. What I would do is add come Calmag plus to your feed water, which contains Nitrogen, and make sure your water is 6.5. If needed do a flush to bring your soil back as close as possible to 6.5. Good luck

Click to expand...

awesome cheers. I don't think its n deficiency because bottom of the plant is fine. I'm feeding biobizz bio bloom, its NPK is2.-7-4. It has dom N in it. I was thinking mag deficiency. But it doesn't really fit that bill either. I was worried about doing a flush on them as they are autos and don't like being too wet. If a flush is what it needs... Then ill do it. A flush might be good actually.. At least then I can start a fresh.. Kinda. In your opinion, would flushing now stunt their growth badly?

cheers

 

labratlee

Well-Known Member

• Sep 11, 2015

• #11

how do I accuratly test my soil Ph? I only have the drops not a digital ph meter. If I test the run off water.. I'm never sure its accurate because I use smart pots, when I water them, some of the water/solution runs out of the holes all over the side of the pot. Depending how dry the soil is depend on how much runs out and into the tray. I feel tak tis water being mixed with the propper run off from the very bottom will obviously give a false reading..... If that makes any sense lol. Is there a better way?

cheers guys

 

labratlee

Well-Known Member

• Sep 11, 2015

• #12

chuck estevez said:

are you feeding them anything?

Click to expand...

yeah, I feeding them with bio bloom from biobizz, NPK is 2-7-4. A added some magnesium un the form of Epsom salts a couple of days ago for the first time.

ta

 

micromary

Active Member

• Sep 11, 2015

• #13

When u balance or water pH how do u do it? Also what brand soil r u using? And what do u pH ur water at. Some tape or something around the top of ur pot may help. Don't know never actually seen a smart pot except in ads. But from my understanding they have like hollow spikes from which the water drains. Correct? If so u may b able to plug the holes some how so u can get a proper runoff reading.