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Discussion Starter · #1 ·
Hello, i have a problem with my staurogyne repens, yellowing and hole on the leaves, then melt. I check the stem so far so good, so it happens only to the leaves. My tanks is 20 gallon, I dose EI , water change 50% every sunday, CO2 35ppm , 60 Watt LED Light DIY. Maybe someone knew this kind of deficiencies ? Here's the picture.

Flower Plant Purple Terrestrial plant Petal

Plant Flower Purple Petal Terrestrial plant
 

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Discussion Starter · #3 ·
Yes it happens to my alternanthera reineckii mini, and alternanthera reineckii varigated. The others is grow well. I dose +/- 1/8 tsp KN03 , 1/32 tsp KH2P04 , 1/8 tsp K2SO4 , Trace Elements 3x a week, Fluorish Excel 2ml everyday , iron edta 13% everyday.

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What exactly are you dosing? Please list what and how much.
Are any other plants showing signs of deficiency?
Yes it happens to my alternanthera reineckii mini, and alternanthera reineckii varigated. The others is grow well. I dose +/- 1/8 tsp KN03 , 1/32 tsp KH2P04 , 1/8 tsp K2SO4 , Trace Elements 3x a week, Fluorish Excel 2ml everyday , iron edta 13% everyday.
 

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Hi.. the same kind of brown patches used to come on my frogbits. I increased the phosphate dosing and now it's gone. Phosphate s something we underdose especially when we have a densely planted tank. I am almost dozing 5 to 6 times the recommended ei phosphate dose now and plants r flourishing. Let's try that for a week and then if symptoms persist or get worse we can c where else the problem might be. Keep us posted.

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In my experience, when I see necrosis on the leaves, I think it’s calcium dificiency. I would dose 1 tsp CaSO4 per 10g just once. Then wait two weeks. You will see the improvement. Don’t forget to continue with your other dosages.
 

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Wouldn't calcium deficiency be seen in new leaves as it's a non movable nutrient. And it usually results in stunted small leaves.
In my experience, when I see necrosis on the leaves, I think it’s calcium dificiency. I would dose 1 tsp CaSO4 per 10g just once. Then wait two weeks. You will see the improvement. Don’t forget to continue with your other dosages.
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Discussion Starter · #8 ·
Hi.. the same kind of brown patches used to come on my frogbits. I increased the phosphate dosing and now it's gone. Phosphate s something we underdose especially when we have a densely planted tank. I am almost dozing 5 to 6 times the recommended ei phosphate dose now and plants r flourishing. Let's try that for a week and then if symptoms persist or get worse we can c where else the problem might be. Keep us posted.

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Agree, i think this is phospate deficiency because I've added more the Nitrogen, Kalium and my plant is not getting better. I would try your advice to increase 5 to 6 times from EI Dosing. Thanks for the advice man. Let see for a week

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I vote for phosphate. What are PO4 levels?
I don't have test kit, but i dose with EI Dosing.

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In my experience, when I see necrosis on the leaves, I think it’s calcium dificiency. I would dose 1 tsp CaSO4 per 10g just once. Then wait two weeks. You will see the improvement. Don’t forget to continue with your other dosages.
I'm using seachem equilibrium every water change, so i dont think this is Calcium deficiency...
 
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