is these a nute burn ?

hy friends

i'm growing 5 ak-48 cannabis plants and 2 of them are looking a bit weird

the plants are 6 weeks old from seed and i'm puting them in 12/12 cycle , they all showed their sex a week ago and the smallest is 33 cm tall
the light is a 250W hps and the temperatures are betwen 18*C and 24*C

Could be a deficiency..what strength are you feeding at? what is your ph?

Your leaves are pretty dark green already. I'm leaning towards a nute burn. Lay off the nutes for an extra watering and see what changes.

i'm using a universal fertiliser for green plants with a npk 10-4-7 once a week 20ml/L as the instruction says

last time i've used the fertiliser monday and with 4 days before that i've moved them from 1.5 liter pots to 4 liter pots in fresh soil mixed with some hydroton

for the next two weeks i will use the same ferilizer and after that i wil start to use a npk 3-5-7 with 10ml/3L every time i give them watter

Nunotmp said:

Could be a deficiency..what strength are you feeding at? what is your ph?

Click to expand...

i don't have instruments to read the ph

10-4-7 at 20ml per liter...

I'm not familiar with the brand, or the product itself, but from what I can infer that amount of nutrient is very great. My own nutrient system is 5-5-7, and I use it at 2 to 3 ml per liter at the strongest, but I also feed every day.

I would agree that the darkness of the leaves indicates an over-abundance of Nitrates in your system. The tips of the leaves are becoming nutrient burnt. They are also asking for more Potassium.

I think now would be a good time to begin using your other nutrient. This will give your plant time to consume any residual food left over from the nutrients you are using now while you supply a greater amount of the Potassium it is asking for. You do need to start testing your pH as I have found pH and temperature to be the most important factors to having a successful harvest.

i've learned from this forum that in the first 2 weeks of flowering i should use the nutrients for vegetative growth and in the 3'rd week to start with bloom nutrients...

on the bag of the soil that i've used for transplantation it says that the ph is betwen 5,5 and 7,5 and i have ni idea about the soil in wich they grew before becouse it was reused from the first grow

before transplantaton i've fed them only once

the nutrient is having a strong pungent ammonia smell.

is this:
http://www.springfromholland.com/en/plan1.html

If you'd like to "use what you've read" rather than your brain then you go right on ahead.
This is one of those "what's wrong with my plant" threads where 4 people come in, tell the grower what is wrong and what they should do to fix it, and then the grower says "Yeah, I know what I'm doing, and I'm just going to keep doing what I have been."

Good luck with that. Your plants are about to burn out. 5.5 to 7.5 is a 2.0 difference. If you knew anything about pH, and how huge that gap is, you'd understand the importance for getting it right. Enh, you live, you learn. I suppose you prefer the hard way. To each his own.

there's no reason to get angry



look at first 2 weeks of flowering

Um... okay... But you're not using this nutrient program.
So how does that even apply.
You have too much Nitrogen and not enough Potassium. It is clear as day. I don't care what the sticker on your bottle says, your sticker cannot look at the plants. Switch now, or reduce one and begin using the other. I don't much care what you do, it's your plant.

Snow crash is right. I'd listen to him.

Triple S said:

i've learned from this forum that in the first 2 weeks of flowering i should use the nutrients for vegetative growth and in the 3'rd week to start with bloom nutrients...

on the bag of the soil that i've used for transplantation it says that the ph is betwen 5,5 and 7,5 and i have ni idea about the soil in wich they grew before becouse it was reused from the first grow

before transplantaton i've fed them only once

the nutrient is having a strong pungent ammonia smell.

is this:
http://www.springfromholland.com/en/plan1.html

Click to expand...

Thats a problem do whatever you want but you should switch to your bloom.

Triple S said:

there's no reason to get angry

look at first 2 weeks of flowering

Click to expand...

Thats general Hydro not your brand, and your fertalizer isnt even made for marijuana why listen to the bottle it cant even talk.

We grow and are giveing general advise and your response is "Well thats great info but the bottle says"

Youngling said:

Snow crash is right. I'd listen to him.

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Agreed. +rep

Snow Crash said:

Um... okay... But you're not using this nutrient program.
So how does that even apply.
You have too much Nitrogen and not enough Potassium. It is clear as day. I don't care what the sticker on your bottle says, your sticker cannot look at the plants. Switch now, or reduce one and begin using the other. I don't much care what you do, it's your plant.

Click to expand...

i will start the bloom nutrient
right now they are under 48 hours of darkness.
first time i will wet them i will use the bloom nutrient

thanks guys ant i'm sorry for the misunderstanding

i have one more question ...
i know that the worm castings are good for the plant but how about earth worms ?
i've gathered about 100 of them from my garden and i don't know if they are anny good ...

should i put them in the pots or should i fed the chickens with them ?

thanks again

Triple S said:

i don't have instruments to read the ph

Click to expand...

You can get liptums paper on ebay for like £1, then you can measure the ph of your run off and fert before you use it,, Its a good investment and cheapest way to read the ph.
Also J.Crevants and many other people will say, more than 36hr of dark will stunt your plants abit, so it should be more a 24hr darkness then flower, your kinda just adding another day to the schedule. dont take offence as it must work for you.
Id say leaf burn from how much nitrogen is in those leaves, very dark green.,
I use a 24-8-12 in veg with no problems so I wouldnt worry that your nutes are to strong. And if you want to use the same soil from another grow make sure its been leached and air-e-ated.
Also you shouldnt have to stick to that fert guide. Its a guide and your plants clearly have enough nutes. Just use it as a rough guide. Your on your second grow and are using the nutes again I presume so you are in the best place to guess whats best. Good luck,,,
Take it easy...

thanks

tommorow i will start the light after 30 hours of darkness



i will buy a ph test kit like this in few days and test the watter


thanks

no reply about the worms