Plz Help I Dont Have a Clue Pics +Rep

[chappac]

Hi all,
Right first things first they are 5 and a half weeks old been on 12/12 for 11 days and have just started to flower.
The problem started in week 3 when most of the big shade leaves started to yellow and then just die off.

Im sure its not nute burn i ran them on just water for a week and a half with no change.

Temp- 30'
Humidity 35-55
Ph- 5.7-6.9
EC- 18-20 using canna Products

I think its i diffency of some kind but this is my first grow so im a bit clueless

Pleeeeezzz Help Me

+rep for anyone that posts

 

[om3gawave]

Your plants are not getting enough potassium!

This is very important, especially during flowering.

The photo above is experiencing a potassium deficiency, whih looks exactly similar to your plants. I suggest changing your nutrient solution. You can feed your plants seaweed meal, or, feed them old smashed up bananas. I would just start out by getting a nutrient that is a little higher in potassium, and go from there. They aren't dead, yet, but get this fixed quick!

Happy growing my friend

 

[heathaa]

yeah you either have nute lockout or potassium deficiency it looks really bad. just a long shot but try adding a teaspoon of salt to your next watering and see if its an mg deficiency.

 

[Supgee3]

^ Agreed.

Definitely looks like a Potassium deficiency, but it may be a Magnesium deficiency as well.

 

[capecodkid]

This is the second time you posted this...Why??? they are telling you the samething we all did.

https://www.rollitup.org/marijuana-plant-problems/269386-plz-help-i-dont-have.html

 

[chappac]

This is the second time you posted this...Why??? they are telling you the samething we all did.

https://www.rollitup.org/marijuana-plant-problems/269386-plz-help-i-dont-have.html

sorry didnt realise id posted twice

Thanks for the help.

Now how do i go about sorting it out i have no clue im growing in NFT system if that helps

 

[capecodkid]

every thing you need is right here...... (read).... https://www.rollitup.org/marijuana-plant-problems/157345-have-plant-problem-check-here.html

 

[chappac]

every thing you need is right here...... (read).... https://www.rollitup.org/marijuana-plant-problems/157345-have-plant-problem-check-here.html

Thanks alot it all makes sense now,

I have some Dutch master Potash+ i will give that a go and see what happens

 

[slk]

why would you be on 12/12 so early into the grow?

 

[chappac]

why would you be on 12/12 so early into the grow?

Well i veged for just over 4 weeks and space is a bit of a concern.

Why do you ask?