Is this a potassium deficiency on the Anubias?

[Dinu85]

 

[Dinu85]

Have had this little 2.2 gallon tank set up for a month now. There is the expected brown algae but some of the Anubias leaves at the top have started going brown/yellow at the base of the leaves. Please can anyone advice. I have tried to Google it and the closest I think is potassium deficiency. But it indicates there are normally holes in the leaves which I can't see.

 

[G H Nelson]

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Anubias Disease!

Hi! I'm new to this forum and I'm feeling not good about a few of my emersed grown plants. I've recently put more attention to my plants after they've been growing emersed for about a year. I have about a hundred of Anubias golden and also about a hundred of Anubias long wavy. Things aren't...

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[simon_the_plant_nerd]

Are you adding nutrients to your water? If you’ve been adding potassium to the water then it’s not going to be potassium deficiency.

 

[Dinu85]

Just been adding seachem comprehensive supplement. But from the back I can't see it has potassium.

 

[John q]

adding seachem comprehensive supplement. But from the back I can't see it has potassium.

No idea how much you are adding but each 1ml added to a 10L tank yields 0.3 ppm K (potassium), unfortunately just dosing a bit more in this case to increase the levels of K isn't really an option, for every 0.3ppm K you add, you will also be adding 0.32 ppm Fe (iron).

Seachem comprehensive is expensive water.
Getting a more balanced fertilizer like Tropica Specialised might help improve things.

I suspect lack of potassium alone isn't the answer to this riddle.

 

[Dinu85]

It is a 2.2gallon tank. I'm adding 1ml of Seachem comprehensive every weekly water change. Ordered Seachem potassium..what are the consequences of dosing this incorrectly. I follow a regime of 50% weekly water changes.

 

[John q]

what are the consequences of dosing this incorrectly.

Not a lot really unless you go mad with it.

Adding 1ml of Seachem potassium weekly to your tank will add an extra 4.8ppm of K, which should be enough to prove or disprove if K deficiency is the problem.

 

[MichaelJ]

I Agree with @John q , I would switch to an alternative all-in-one fertilizer. Just dose per the instructions. Tropica specialized is a good choice, but for a tank like this you can’t go wrong any reputable product such as TNC - Just make sure it provides everything.

Secondly, and perhaps more important, make sure you have adequate nutrient distribution - that is, flow - around the tank. I’ve seen similar on my Anubias and it really came down to nutrient distribution rather anything missing from my fertilizers.

Cheers,
Michael

 

[Dinu85]

Thanks guys. The nutrient distribution is something I never thought off. The top half of the Scape is just 3 anubias bonsais. Assumed some of the plant would be getting the nutrients I release into the top water flow.

 

[MichaelJ]

Thanks guys. The nutrient distribution is something I never thought off. The top half of the Scape is just 3 anubias bonsais. Assumed some of the plant would be getting the nutrients I release into the top water flow.

can’t tell if you doing much filtration here, but with such a small tank (10L) a tiny internal or HOB filter or perhaps just an air stone should suffice to create enough water movement.

Cheers,
Michael

 

[Imran #786]

If u remove all the yellow and damaged leaves then dose as usual maybe u will find the root of the problem... could also be too much lighting 🤷‍♀️