What could cause such a condition of plants?

[Tomasz]

Can anyone advise what could cause such an appearance of leaves?

From the distance doesn't look too bad but something started to happen.

 

[MichaelJ]

From the distance doesn't look too bad but something started to happen.

Hi @Tomasz, From a distance it looks pretty good actually... Anyway, post more info about your tank and when this issue started... any recent changes etc... This will greatly increase the chance of a proper diagnosis:

Please read the guidelines for plant help!

Dear Member Please give as many details as possible regarding your aquarium set-up, when requiring advice/help! The above will be posted at the start of each help request. Why do we ask these questions? It will reduce the member posting multiple times, plus adviser's don't need to scroll...

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Cheers,
Michael

 

[Tomasz]

Thanks @MichaelJ !!!
1. Size of tank: 182l (90x45x45 cm)
2. Age of the system approximately (3 months)
3. Tap water parameters (2dKH, 3dGH, pH 7.6, NO3 5mg/l, PO4 2.5mg/l, Ca 15 mg/l)
4. Filtration: Eheim Professionel 4+ 600 (foams, pumice, substrate pro)
5. Lighting and duration. (10.5 including 1.5h for sunrise and 1.5h for sunset)
6. Substrate (Tropica Aquarium Soil)
7. Co2 dosing or Non-dosing. (CO2 from fire extinguisher and DIY reactor, drop checker becomes yellowish)
8. Fertilizers used + Ratios. (at the moment per week: Tropica Premium 14ml, Seachem Nitrogen 20ml)
9. Water change regime and composition (Tap water 30% weekly)
10. Plant list (Rotala Green, Heteranthera Zosterifolia, Rotala Macrandra, Ludwigia Repens Rubin, Rotala H'ra Vietnam, Rotala Wallichii, AR mini, Pogostemon Heiferi, Hemianthus Cuba, Pogostemon Erectus, Bacopa Monieri, Rotala Bonzai, Cryptocoryne Parva Mini, Staurogyne Repens, Java Moss)
11. Inhabitants (11x Tetra Neon, 6x Otos, small population of shrimps. RC, Amano and Crystal Red.

The tank has been driven according to Tropica guidelines for first 90 days. Started fertilising in week 4th with Tropica Premium half dose (6ml per week). After 2nd month tried to increase dose to full recommended by Tropica introducing as well N and P from Tropica Specialised.
Over two weeks ago I had bacteria bloom caused probably due to overdosing of Seachem Stability. Then also I got to know about high levels of PO4 in my tap water. Returned to Tropica Premium as it doesn't contain P (and N as well) and introduced N from Seachem Nitrogen (20ml per week which raises N by about 2ppm). As per my calculation together with water change and dosing ferts I add:

Last week I tried to increase K to about 5ppm and Mg to about 0.9ppm, however I think it is too early to see any effect of this.

 

[PARAGUAY]

Think l would prefer Tropica Specialised esp. for a CO2 set up. You could cut your lighting intensity and duration back a little, and observe, but l agree with @MichaelJ overall off your pictures not that bad

 

[Tomasz]

Think l would prefer Tropica Specialised esp. for a CO2 set up. You could cut your lighting intensity and duration back a little, and observe, but l agree with @MichaelJ overall off your pictures not that bad

The only difference in Specialised is that it contains N and P. I got back to Premium only because PO4 in my tap water is high.

 

[dw1305]

Hi all,

Can anyone advise what could cause such an appearance of leaves?

I'm not sure at all about the leaf edge bronzing, it may be a physiological response to higher light.

You get something similar with Water Mint (<"Mentha aquatica">) (bottom right of linked image) as it grows in the spring and both plants belong to the Lamiaceae. If you haven't upped light intensity? It may be an indication that your light - CO2 - nutrient triangle is beginning to get out of balance.

Think l would prefer Tropica Specialised esp. for a CO2 set up. You could cut your lighting intensity and duration back a little, and observe, but l agree with @MichaelJ overall off your pictures not that bad

Agreed, looks pretty good.

The only difference in Specialised is that it contains N and P. I got back to Premium only because PO4 in my tap water is high.

Same for me, I'd ignore the <"level of PO4--- in the tap water"> and dose it anyway.

cheers Darrel

 

[Tomasz]

Hi @dw1305. Thank you very much! I have increased the light slightly about a week ago from R60 G40 B45 to R65 G45 B50 recently. Maybe I should go back down and see what happens.
How about potassium? Shall I increase it any further? Knowing Ca and GH of my tap water I calculated that I should have around 4ppm of Mg.

And should I increase dosing micro as well due to this level of PO4?

 

[dw1305]

Hi all,

I have increased the light slightly about a week ago from R60 G40 B45 to R65 G45 B50 recently. Maybe I should go back down and see what happens.

I'd guess that is probably the reason. Entirely up to you whether you dial the light back down, I might leave it how it is and see what things look like in a week or so.

How about potassium? Shall I increase it any further? Knowing Ca and GH of my tap water I calculated that I should have around 4ppm of Mg.

And should I increase dosing micro as well due to this level of PO4?

I've never used CO2, so you will need advice from some-one who is also a high tech. tank keeper.

cheers Darrel