Probably nute burn

Growing in biobizz all mix pH 6.5 biobizz fish food 1ml/litre and bloom 1ml/litre.

Now 4 weeks into 12/12 been havin this issue since week 8 veg (plants have been mainlined) and are in 25 litre pots.

Losing leaves fast...going like the picture then brown and falling off

KevlarKid said:

Growing in biobizz all mix pH 6.5 biobizz fish food 1ml/litre and bloom 1ml/litre.

Now 4 weeks into 12/12 been havin this issue since week 8 veg (plants have been mainlined) and are in 25 litre pots.

Losing leaves fast...going like the picture then brown and falling offView attachment 3757337

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Post a pic of plant? I dont think its burn,looks hungry but a pic would help diagnose whats going on.

It appears RoBisCo is stunted....

Cheers SPLFREAK

So here are pics of plant, but under HPS

Whole plant went lighter and lighter in colour and bottom leaves started curling anf falling off...I also thought N def so upped fishmix to 2ml/litre and because of burnt tips now I think N lockout from overfeed.

The plants were vegged for 2 months in 25litre pots and started yellowing at 6 weeks from seed so I was so sure it was N def. Now I have no idea seeing as I upped the fish mix to double dose

Light burn.
Move the light farther away or turn the ballast to 75% or 50%

Could be deficiency but first guess is lights.

You cant see anything in picture with HPS on, retake pic under white light

Cheers for the reply Dumme...Am using a lux meter so I'm sure it's not light burn...it's also worst at bottom of plant moving up

Retake pic under white light. Noone can see.

Here ya go, look greener than I thought under white light, but still lime green and yellow.

Lookin at my own pictures I'd say N def, but what makes me doubt that is the leaves gowing brown before they fall off...is that just a symptom of late stage N def?

Did you cut the N out completely when flower started ....??

Hey Indacouch...No, I ran fishmix at 2ml/l from week 6 veg (when I noticed the yellowing). Because they were vegged for 2 months maybe 2ml/l is still not enough?

Any ideas?

To much p and k, Way to early. I use nitrogen rich nutrients till about week 5 then I'll gradually switch over to the flowering shit.

KevlarKid said:

Any ideas?

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Phos and iron deficiency and under watering

MrSunshine...I've only just started bloom nutes (week 4 flower) and have been giving Nitrogen at double recommended dose for a while now (way before i switched)

KevlarKid said:

MrSunshine...I've only just started bloom nutes (week 4 flower) and have been giving Nitrogen at double recommended dose for a while now (way before i switched)

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I had a plant this grow that looked like that in flower just like yours. Lime green leaves everywhere. Eventually it will eat its lower leaves. I had to cut it down early because it looked worse as the weeks went on mate. Was still some killer smoke.

Eventually it will eat its lower leaves. I had to cut it down early because it looked worse as the weeks went on mate.

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Aww man that's what I was dreading...leaves are defo eating themselves!

You ever figure out the problem or even have an incling what could have gone wrong?

KevlarKid said:

Aww man that's what I was dreading...leaves are defo eating themselves!

You ever figure out the problem or even have an incling what could have gone wrong?

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The only thing that I know for sure is that multiple lockout were happening. Why? No one could give me a straight answer and honestly I had 3 other bigger plants so I never got to find out.

StoneyMcphatter said:

The only thing that I know for sure is that multiple lockout were happening. Why? No one could give me a straight answer and honestly I had 3 other bigger plants so I never got to find out.

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Snap lol...Cheers anyway dude!

I have a theory (dangerous ground I know)...I had a fungus gnat problem that I let get pretty bad before using BTI to clear the larvae....maybe they ate all my root hairs leading to multiple lockout.