Is this iron deficiency or something else

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Newgrow31

Active Member

• Oct 10, 2020

• #1

What's going on here pls
Is it an iron deficiency or something else

I'm on day 5 after the switch
In 20l pots biobizz light started from clones
600w hps feeding a biobizz bloom and a fish mix

 

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Newgrow31

Active Member

• Oct 11, 2020

• #2

Anyone????

 

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myke

Well-Known Member

• Oct 11, 2020

• #3

is it only on the top leaves?

 

myke

Well-Known Member

• Oct 11, 2020

• #4

Excess K can look like that,but first check pH.

 

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Newgrow31

Active Member

• Oct 11, 2020

• #5

myke said:

is it only on the top leaves?

Click to expand...

Seems to be o. The new growth pH is fine at the moment

 

Merlin1147

Well-Known Member

• Oct 11, 2020

• #6

It’s not Fe deficiency. My first thought was pH fluctuation but It might be Boron deficiency.