Brown and crispy leaves

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Starbwoi1990

Member
Wassup ladies and gents!

I am in the 30th day of flower and I have noticed some of the leaves are going brown round the edges and getting crispy.
I am assuming it’s because they are too close to the lights so I have moved the lights (hps 600w) slightly higher but I am a bit confused because some of the taller plants closer to the lights are not showing the same symptoms?
What can/should I do and should I be concerned?
Thanks in advance for reading and possibly shedding some light on the issue
 

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FastFreddi

FastFreddi

Well-Known Member
Does the necrosis/color change occur almost like nute burned tips, followed by yellowing between veins, then the death of the leaves?
FF
 
osowhom

osowhom

Well-Known Member
yes you should be very very concerned at this stage listen to FF he knows his stuff what are you feeding and how often it looks like she is starved for something
 
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Starbwoi1990

Member
FastFreddi said:
Ambient temps?
Give a full run down...much easier to help.
FF
Click to expand...
when lights on around 28/29 but sometimes when I wake up they have gone to 30/31degree

lights off around 20 degrees Celsius

I give them mills: A,B,ultimate PK and C4 all the dosages that the programme states.

I give them about 3.5 litres every two days as if I give more it over flows the container at the bottom.
 
FastFreddi

FastFreddi

Well-Known Member
Ok...try to keep those temps DOWN.
Hps temps no higher 78-80 max.
Lower the amount of fertilizer...manufacturers always overstate usage so you buy more.
Cut to half, and give the plants a good watering/ feeding with good runoff.
Raise the lights or move the most damaged to the outskirts of the lit zone, allow them to recover.
Damage already existing is done...watch new growth for normalcy.
Hths
FF
 
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Starbwoi1990

Member
FastFreddi said:
Ok...try to keep those temps DOWN.
Hps temps no higher 78-80 max.
Lower the amount of fertilizer...manufacturers always overstate usage so you buy more.
Cut to half, and give the plants a good watering/ feeding with good runoff.
Raise the lights or move the most damaged to the outskirts of the lit zone, allow them to recover.
Damage already existing is done...watch new growth for normalcy.
Hths
FF
Click to expand...
thank you so much bro your a star!
a bit confused though as you said deficiency so I would of assumed it needed more? Unless as I’m using too much one nutrient is not being taken in by the medium as the others are drowning it out?
also as I’m 30 days into flower how long do you think until harvest and what should I look out for so I know when to harvest?

also the room is 3.8m by 3.2m and I have 8 to 10 600w lights on. Is that too much?
 
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FastFreddi

FastFreddi

Well-Known Member
Wattzzup said:
My HPS stays 28”-30” away. Your light is way too close. The HPS light puts off about 90,000 lumens.
Click to expand...
Anytime you are unsure, set your lights high, then gradually over days, lower until the plants START to show stress, then raise back to last position.
This is for the op, I quoted the wrong response.
FF
 
xtsho

xtsho

Well-Known Member
Starbwoi1990 said:
thank you so much bro your a star!
a bit confused though as you said deficiency so I would of assumed it needed more? Unless as I’m using too much one nutrient is not being taken in by the medium as the others are drowning it out?
also as I’m 30 days into flower how long do you think until harvest and what should I look out for so I know when to harvest?

also the room is 3.8m by 3.2m and I have 8 to 10 600w lights on. Is that too much?
Click to expand...
You can have a deficiency caused by overfeeding. Too much of one nutrient can lockout another. It's called nutrient antagonism. But in your case it looks like you overfed and fried your plants. I'd drop the PK and C4 and just run the A + B.

Good luck.
 
FastFreddi

FastFreddi

Well-Known Member
Starbwoi1990 said:
thank you so much bro your a star!
a bit confused though as you said deficiency so I would of assumed it needed more? Unless as I’m using too much one nutrient is not being taken in by the medium as the others are drowning it out?
also as I’m 30 days into flower how long do you think until harvest and what should I look out for so I know when to harvest?

also the room is 3.8m by 3.2m and I have 8 to 10 600w lights on. Is that too much?
Click to expand...
That is a lot of heat to control...I am going to say yes....you probably only need 6.
Harvest is usually thought about at least around 60 days from flip to 12/12...many need 70 or close, many go over( mainly sativas)
Ask about harvest in 4 or 5 more weeks.
Good luck.
FF
 
FastFreddi

FastFreddi

Well-Known Member
xtsho said:
You can have a deficiency caused by overfeeding. Too much of one nutrient can lockout another. It's called nutrient antagonism. But in your case it looks like you overfed and fried your plants. I'd drop the PK and C4 and just run the A + B.

Good luck.
Click to expand...
Sorry, failed to mention lockout as the deficiency cause....absolutely agree.
FF
 
S

Starbwoi1990

Member
FastFreddi said:
Ok...try to keep those temps DOWN.
Hps temps no higher 78-80 max.
Lower the amount of fertilizer...manufacturers always overstate usage so you buy more.
Cut to half, and give the plants a good watering/ feeding with good runoff.
Raise the lights or move the most damaged to the outskirts of the lit zone, allow them to recover.
Damage already existing is done...watch new growth for normalcy.
Hths
FF
Click to expand...
xtsho said:
You can have a deficiency caused by overfeeding. Too much of one nutrient can lockout another. It's called nutrient antagonism. But in your case it looks like you overfed and fried your plants. I'd drop the PK and C4 and just run the A + B.

Good luck.
Click to expand...
will do this made. For how many feeds? Also forgot I put in vitalise as well
 
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