A little advise would be appreciated

[Shape Shifter]

If you use RO or distilled water, the chances are high that your plants are getting next to no Cal-Mag. The same also applies to situations where you are using growing media like coco coir.

He's not using RO or distilled. Already discussed.

 

[Budzbuddha]

He's not using RO or distilled. Already discussed.

he just said “ filtered “ water .... smh

 

[Shape Shifter]

he just said “ filtered “ water .... smh

100ppm filtered water. Good water.

 

[Budzbuddha]

OP ... also watch your use of FF TRIO ( old user ) they can salt up your medium quite fast ... your nitro looks a “ little “ heavy but no that the feeding schedule is way too much. Less is more running these nutes.

 

[Shape Shifter]

Phosphorus issues start at the bottom of the plant.

His issue is at the top, which indicates it's a Cal/Mg issue.

Look at phosphorous excess here

https://i.redd.it/qhrj8qmjl7az.jpg

 

[Clump354]

NO ....

You at the upper limits of ph at 7.0 for soil.
There is no reason to rely on cheap soil meters when all you have to do is keep a stable ph of whats going in. Meaning control the ph of your water and or mix to “ better “ match the range needed for soil ..... 6.5.

Those leaf issues are signs of a PH issue or swing.
Cannabis does NOT need special water ...

I've been phone err thing at 6.2 to 6.5

 

[Budzbuddha]

My 2¢ on the following....

Readjust your LST of tops so middle “ opens up “ and inner budsites can get light and push up. Clean the big lower fans to improve air flow and light penetration.

Try to do this before branching gets too stiff to move without snapping .

 

[Kalebaiden]

Look at phosphorous excess here

https://i.redd.it/qhrj8qmjl7az.jpg

I see why you're stuck on a P-excess bit it doesn't follow suit with the symptoms shown and the pics provided.

P excess would start at the bottom of the plant. Not the top.

 

[Shape Shifter]

If you think its a deficiency, refer to this chart.



I still think its an excess. Good luck OP.