Is this a P Deff??? Please Help... Been Fighting It For a while

First started by trying to fix what I thought to be a mag def during veg... not it, trying my best to keep on top of it... Now in week 3 of flower, trichs already showing up. want to make sure she gets all she needs. yellowing started down on the lower leaves, and now moving upwards...


100% coco,
52l pot
only using a ph soultion at about 6... will be buying a digital ph meter soon...

what should I do? More Phos? or is this a early flower nitrogen def? please help

I've got the same problem, bumping this for guidance.

Dont think nitrogen is your problem......cant really see the very low growth but doesnt look yellow so I would rule out nitrogen.

you are growing in COCO
So coco has a shit load of phos you need to run your ph at 5.6 - 5.8 flush weekly and add a shit load of calmag thats your def there dude

lighting said:

you are growing in COCO
So coco has a shit load of phos you need to run your ph at 5.6 - 5.8 flush weekly and and a shit load of calmag thats your def there dude

Click to expand...

Ill give it a go. Ive been adding calcium nitrate.what should i do for mag? Is There a nute for both?

maybe P or K but not sure

Here is a link where it looks like Atomizer gave a solution to the same or similar problem


https://www.rollitup.org/hydroponics-aeroponics/414842-calcium-nitrate-epsom-salts-how.html

Cheers guys. I've been upping the feeding and Been foliar feeding with Epsom . Not too sure if I've seen improvement. Just flushed her today. Should I feed her today? Anyway. Some pics of the bottom leaves and the top. I've heard molybdenum def showing signs of yellowing middle leaves, maybe??? Thought it may be a mix of N/K and calmag def...

observed symtoms

The leaves curl down
interveinal chlorsis
Dry grey/brown dying tips on lower leaves
Maybe a bit of necrosis?
margins of leaves curling under
thin, brittle stems

Lower Leaf Examples



Now this is from in the middle to top region

This is a pic of the affected upper region


Anyone who can help or give advice will get rep, of course. I'm going to keep up the calmag treatments to see where we go... If there is anything else I should do please let me know... By the way she is 3.5 weeks into flower, is she on track otherwise??? Thanks

bump,,,,,,