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Plants turning brown/yellow

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Jenny32

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Hi,

I thought I did my research well enough to start planting my tank. Maybe I was wrong! I have anubias and java fern which the leaves are turning brown on anubias and black/yellow on java fern. 90l tank i add 1ml of flourish every week and medium lighting(i think?!)....water is
6.8 - 7 PH
Trace - ammonium
0 - nitrites
10 - 15 nitrates (sometimes it reads zero!)
Gh - 3 (using aqua care test)
Kh - 1 (using aqua care test)

Is kh too low for plants, should i be doing other tests? Adding other fertizers?

I also have Rotala rotundifolia which seems to be doing ok.
 

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Can you give us any data on the light? Spectrum (the K number), duration, intensity.

The KH is not a problem, neither is the GH here. The Flourish Comprehensive Supplement will provide all necessary nutrients, and the dose is fine; these plants need less nutrients and light as they are slow growers.
 
Byron said:
Can you give us any data on the light? Spectrum (the K number), duration, intensity.

The KH is not a problem, neither is the GH here. The Flourish Comprehensive Supplement will provide all necessary nutrients, and the dose is fine; these plants need less nutrients and light as they are slow growers.
Click to expand...
I think it is 3000-25000 k. I have it at about 15% for red, blue and green and about 8% for white. I have up'd it to 15% for all.

Maybe it was too low? So hard to tell!
 

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The Kelvin at 3000K to 24000K...not sure what this is about. Plants will grow best in light that is in the range of 5000K to 65000K, if it is high in the red, blue and green colours. This means the "white" light is composed of light that peaks in these three colours. The Kelvin is the colour temperature of light. All light is composed of colours, the spectrum, like we see in a rainbow. Light that is high in the red, blue and green wavelengths is closest to mid-day sun and plants respond best to it. So it is the colour wavelengths of the white light that matters here.
 
Byron said:
The Kelvin at 3000K to 24000K...not sure what this is about. Plants will grow best in light that is in the range of 5000K to 65000K, if it is high in the red, blue and green colours. This means the "white" light is composed of light that peaks in these three colours. The Kelvin is the colour temperature of light. All light is composed of colours, the spectrum, like we see in a rainbow. Light that is high in the red, blue and green wavelengths is closest to mid-day sun and plants respond best to it. So it is the colour wavelengths of the white light that matters here.
Click to expand...
Ok that makes sense. Ill up the 3 colours and leave white setting as is.

Cheers
 
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