Richard Sexton wrote:
In article ,
Elaine T wrote:
Jan wrote:
I recently set up a 20 gallon tank, and added some plants. One of them
developed brown spots on the leaves. You can see the photo at
It's planted in the middle of the tank, where there is more light. Could
this plant be getting too much light? The other plants, bought at the same
time, look great.
The disease, whatever it is, seems to be progressing. Is there anything I
could do to save this plant?
The tank has beed running for two weeks. pH is 7.8, ammonia 0, nitrite 0.25,
nitrate 5 ppm. I alwo added some liquid fertilizer.
Another thought. Those swords are often grown emersed and the foliage
doesn't always adapt well to being submerged. If that is the case,
healthy new foliage will begin to grow from the middle of the plant.
I think the brown holes are a red herring and that it's a Nitrogen
deficiency. The new leaves aren't green, and they should be.
You know, that pattern of green veins and lighter mesophyl on the older
leaves looks EXACTLY like an Echinodorus leaf picture in the Optimum
Aquarium (p.117) labeled "Christmas Tree disease." Horst and Kipper say
that vein pattern is due to either manganese deficiency or iron overdosing.
I see what you mean about the new growth, though. Is that what low
nitrogen does? I'm always trying to lower it - not add more. ;-)
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__ Elaine T __
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