Intervein burn problems

[Mr rancheiro]

I've been changing my soil mix and my feeding schedule and I encounter this intervein burn and some brown spots on some of the the top leaf. I've been trying to identify the problem but no luck.
Here is what I use:
Ready Grow coco aeration,
top and side lights,
78 degrees F
around 55% humidity
feeding at week 6 @ 2.8 EC
Ph @ 5.8,
Cal-Mag plus - 3 ml/gal
Heavy 16 A+B - 12 ml/gal
H16 Prime - 4 ml/gal
H16 Fire - 4 ml/gal
Seagreen - 1 ml/gal
Dripclean - 1 ml/gal
Orca - 1 ml/gal
Proteck - 2 ml/gal

Every 10-15 days Botanicare Pure Blend Tea, Enzimes and Foliar H16

Please any help will be highly appreciated.

Thanks

 

[Rootbound]

Have you ever checked your runoff for PH and EC readings? Seems like a pretty strong feeding at 2.8 ec also.

 

[Mr rancheiro]

Yes I do. I always feed with at least 10-20% run off. I usually have a run off around 3.2 EC and as it goes higher then that I do a small flush with tea, drip clean seagreen and clarex until I get my EC lower again.

 

[Rootbound]

Did you check the PH of your runoff?

 

[Mr rancheiro]

I usually just check the EC. As far as I know, coco ph is not very accurate from run off.

 

[Seamaiden]

First, it's really much more helpful to see the leaves in situ, that's actually paramount for me in doing diagnostics. Second, what you've shown show at least two issues, Ca-, and P-.

Ca- is evidenced by the interveinal necrosis, always on upper leaves though. Sometimes it shows as leaf margin necrosis, but again, always on the uppers as Ca is an immobile element.

The P- is evidenced by the very dark green color of the leaves, and the reddened/purpled petioles.

How to fix? I.. you've got quite a concoction going on there, I'd have to tease it apart first before I could really comment, and about the only things you've got listed there that I've ever used are the Cal-Mag and Protekt.

 

[Natural]

These guys are giving you great advice. The hydro store must get boners when they see you walk in..lol.
The way I figure it..you are rez feeding? Lower your EC...bump up your CalMag..raise your PH to 6...and I wouldn't use Clearex at all..at least until flush and with water only. I think your plants would love some plain waterings or at least very very low EC feedings at least once a week.

 

[Cat Jockey]

Looks like you are in flower, eh? A good indicator on a Ca def is to look for two different colors on the spots you are describing, namely a circle of a lighter color surrounded by a ring of a rust or brown color.

I agree with Miss Seamaiden of the semi-creepy avatar on two points:

Give us a pic of the whole plant & you've got a concoction of stuff going on there.

Snap a pic of the label of each bottle of nutes showing the guaranteed analysis and also the weight/volume of the bottle (also on the label). We can break down exactly what you are feeding yer girls.

 

[Seamaiden]

No te gusta las dias de los muertes...? Creo ahora es las dias de los muertes, y tengo Hello Kitty se muerte. :D