Deficiency?

[Mrblack]

Hi guys
Iv looked over so many sites in trying to see what problem is occurring here ???
They are in soil and I’m using bio bizz nutrients and are in week 4 of flower
Any help from the pros please
Cheers

 

[Glookies1]

Is that the only leaf showing it?

 

[Mrblack]

a couple Have had the odd leaf
showing the same problem
Any ideas
Cheers

 

[Emilya Green]

are any of the lower leaves yellowing?

 

[Emilya Green]

oh, and welcome to the forum @Mrblack !

 

[Mrblack]

Yes some of the smaller leafs at the bottom have gone like that
I removed them
Thank you I’m happy
I signed up
Scrolling through a load of sites
Trying to get a clear idea of
what the plant is missing
Any help would be appreciated

 

[Emilya Green]

It is my belief from what I have seen so far that you are dealing with a potassium deficiency. The cause is still a mystery, but I find that it is usually someone not giving enough nutes at this stage, or there is a pH problem. Tell us more?

 

[Glookies1]

It is my belief from what I have seen so far that you are dealing with a potassium deficiency. The cause is still a mystery, but I find that it is usually someone not giving enough nutes at this stage, or there is a pH problem. Tell us more?

Potassium does cause brown and “crispy” leaves. What mystifies new is that it seems to be do limited on the plant.

 

[Mrblack]

It is my belief from what I have seen so far that you are dealing with a potassium deficiency. The cause is still a mystery, but I find that it is usually someone not giving enough nutes at this stage, or there is a pH problem. Tell us more?

yes I believe you are wright as I have looked at my feed schedule and the bloom
Needs more
They are also very large plants
So I believe adjusting the feed should correct this
Thanks for your advice