Fan leafes are yellowing

[Toastman]

looks pretty, but some fanleaves in the lower parts of the plants start to go yellow ->
happend really quickly and don't know what its about..
do i have to sorrow? ^^

i use BioBizz BioBloom,BioBizz Biogrow Biobizz Topmax
And Biobizz All-Mix soil

nuteburn? or nitrogen def?

greetings Ma

 

[namvet25]

It's normal for a few of the first bottom leaves to yellow and dry up but if it continues you might have a nitrogen def so bump up the nitrogen a little and see if it helps.

 

[Toastman]

:thank:

 

[TRiGz]

Hello I have yellow leafs then goin brown iam useing coco with canna start canna a b rizotonic and cannazyn its in veg about 3 weeks in but leafs keep going yellow then brown to crips

 

[Waira]

Hi ma311- how old are the plants, are are they in bloom? Bases look good-- nice branching!.... I agree with Nammy, and would add that the second leaf pic looks more Mg deficient....usually, with N defc., the veins yellow out at that advanced point, but Mg can still have pretty solid color in them... In either case, what you have going on here looks mild,... dose the plants as Nammy said, and add in some Mg supplement- epsoms (1tsp/L), or dedicated Ca-Mg supplement...

 

[TRiGz]

Can you tell me the problem

 

[Toastman]

thx Waira the plants are at day 36 see over here
---> https://www.autoflower.org/f44/my-first-autos-grow-journal-38673.html

 

[Muddy]

View attachment 404872

Can you tell me the problem

TRiGz, not cool to post your issues in someone else's thread. We call it hijacking. If you haven't already, please create your own thread and we'll address your issues there.

 

[TRiGz]

So sorry about that did not know very sorry

 

[Waira]

Hey ma'- :smoke: great looking plants, mate, fine job so far! So, I looked up Biobizz, and I see that they're pretty mild nutes..are you feeding at full strength? I'm guessing you are, and that's good... bigger plants, bigger demand for food! Budding is well under way, and often you'll start to see some lower fans start to get yellow... this looks like some leaves are being tapped for N and other nutes to help support that fine bud growth! Nothing alarming here, only a few leaves, but I would get started on Ca-Mg supplements, and this is the time when deficiency usually starts with these two nute's...just watch those lower fans for a sudden increase in yellowing, fast moving... that will be a sign that they need more N than they are getting, and we can deal with that... likely you know, this yellowing is normal as the buds mature and ripen, up to a point! Too much, too early is what we want to avoid, but so far, you're good!