Plant Doctor Help Needed, Black/transparent Stripes At Plant Leaves

Hello, thank you for few minutes of your life that might save hours or days of mine...

I have recently - 3 months ago started with aquarium. It was supposed to be fish aquarium but i have somehow felt in love with planted aquarium. I have bought Co2, fluid fertilizers, water tests...

So far i see that all is getting better, yet is so far from being perfect.

Please see pictures of plant and give me advice what is wrong. I do not have substrate, just gravel but there are caps and tabs in space of roots for plants that seems need it

Alternanthera - leaves curled outside, cracks in, yet plant is alive, grow is stunt, this affect old and new leaves
Echinodorus Bleheri - few leaves with yellow tips, few leaves too bright
Java fang - new leaves bright transparent tips

cryptocoryne does reproduce but does not grow in size

Light 2800lumens led, aquarium 110l, internal and external filter, water values seems to be okey but it is hard to say as results differ based on light conditions

 

Thank you for reply,

Here is what should be results of my weekly fertilization:

No3 10.92ppm
N 2.52ppm
K 7.70ppm
PO4 1.50ppm
P 0.30ppm
Fe 0.35ppm
Mg 0.73ppm
dGH 0.01ppm
Mn 0.02ppm
I 0.01ppm
B 0.00ppm
Cu 0.00ppm
Mo 0.00ppm
Zn 0.00ppm
Li 0.00ppm
Ni 0.00ppm
Al 0.00ppm
Co 0.00ppm
Sn 0.00ppm
F 0.00ppm
K2O 0.05ppm
Ca 3.64ppm

This is calculated by Rotala Butterfly, i use 3x week Macro and 3x week micro. Using Easy-Life fertilizers in fluid form, by water tests from JBL they do works...supplementation is visible on results. My current issue is phosphate as I'm now using filter medium that remove SiO2, but also Phosphates as i had high SiO2 and diatoms(hope i say it right). Therefor i dose now extra phosphates above the mentioned dosing as by tests i see my level of phosphates drops to zero every day.

I cannot measure calcium, i do not think that damage is cause by Golden Chinesse Algea eater as this can be found even on the tiniest leaves - picture 3.

What is weird are brighter new leaves on Java Fang with transparent tips. Also curling new and old leaves on Alternathera that i can now also notice little bit at Ludwigia palustris red.

I do change 25l water every week (25% +/-), Trying to do EI that does not force me to 50percent water changes every week, so dosing a bit less.

 

My bad,yes i ment Java Fern. Thank you for explanation.

I do check after week what values are in tank to see if there is enough of nutritients that is why I keep values at that range...I can always add more and see if that might was problem.

Filter médium will go out today. Thank you for tip.

The damage we speak about that stripes at leaves are on new and old plants also, old and new leaves. I will try to dose more micro nutritients.

I will post update in next week's.

Thank you.

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