M

Mr rancheiro

Posts

6

Joined

Oct 30, 2013

Points

1

Oct 30, 2013

#1

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

 

Attachments

• intervein-burn-problems.jpg

  177.2 KB · Views: 588
• intervein-burn-problems-2.jpg

  159.3 KB · Views: 503
• intervein-burn-problems-3.jpg

  199.4 KB · Views: 492

Rootbound

Supporter

Posts

2,634

Reactions

5,114

Joined

Aug 19, 2008

Points

263

Oct 30, 2013

#2

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

 

M

Mr rancheiro

Posts

6

Joined

Oct 30, 2013

Points

1

Oct 30, 2013

#3

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

Supporter

Posts

2,634

Reactions

5,114

Joined

Aug 19, 2008

Points

263

Oct 31, 2013

#4

Did you check the PH of your runoff?

 

M

Mr rancheiro

Posts

6

Joined

Oct 30, 2013

Points

1

Oct 31, 2013

#5

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

 

Seamaiden

Living dead girl

Posts

23,594

Reactions

34,048

Joined

Apr 13, 2010

Points

638

Nov 3, 2013

#6

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

Posts

2,536

Reactions

4,395

Joined

Apr 21, 2011

Points

263

Nov 3, 2013

#7

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

Posts

264

Reactions

80

Joined

Aug 18, 2009

Points

28

Nov 4, 2013

#8

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

Living dead girl

Posts

23,594

Reactions

34,048

Joined

Apr 13, 2010

Points

638

Nov 5, 2013

#9

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