Unsure on nutrient deficiency

[bennell]

Hi all!

Would just like a opinion on a possible deficiency that has started to creep in the past week or so, that has never been present before.

The new leafs of my anubias barteri have started to wrinkle round the edges and the same with my ench.
I also have pin holes in various plants and a transparency in one or two which is developing really quickly and eating up the leafs.

One of the old leafs on my L. Repens seems to have melted? And im now getting gsa on slow growers (crypts and anubias)

Tank specs;
140L

Light - zetlight 42w led 6700k + R&B on for 7 hours @100% and 1 hour (sunrise+sunset)

Co2 injected via jbl inline diffuser for 8 hours with drop checker moving into yellow when co2 shuts off.
pretty confident co2 isnt the issue on this as im dosing a pretty high amounts and flow is more than adequate (but im not ruling it out!)

My EI dosing should yeild the following (weekly amounts macro3x mirco 3x)
No3 22.5ppm
N 5.07 pom
K 15.54 ppm
P 1.26 ppm
Po4 3.9 ppm
Mg 15 pmm
S 19.8 ppm

All worked out from http://rotalabutterfly.com/nutrient-calculator.php using the salts kno3,kh2po4 and mgso4

Im suspecting iron and k but currently dont have the test kits to check (will have at weekend)

Any initial thoughts as to what it could be?

Thanks

Pics to follow

 

[Joe Bennell]

Pics below

 

[PARAGUAY]

I am no expert but I would try increasing the EI first, some of these plants are greedy feeders,remove all dying or dead leaves to invigorate newer growth GSA on slower growers,maybe shade them?Incresing ferts divides opinion but the experts use the term "luxury uptake" so nutrient is always available

 

[PARAGUAY]

There is a good link given by Edwin on another question may help, google site Deficency Finder

 

[bennell]

Thanks buddy!

 

[rebel]

I would double k2po4 dosing and observe for 10 days. Pinholes are suspicious for k. GSA for po4. Both are hard to overdose.