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Bucephalandra Leaves turned yellow
#1
Photo 
HI,

I have some bucephalandra in my tank for about a year.
Now some leaves have developed tiny holes in it and some leaves has turned yellow.
Can anyone diagnose the issue.

 [Image: IMG-20190316-091847.jpg]
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#2
I've not had buceph, but isn't it a low-light plant? If so, then maybe the lights are too bright or on too long for it?
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#3
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#4
What fertiliser do you use? Is it old growth that has gone yellow or new growth? It could point towards some sort of deficiency.
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#5
(17-03-2019, 09:58 AM)plankton Wrote: I've not had buceph, but isn't it a low-light plant? If so, then maybe the lights are too bright or on too long for it?

Yes, it grows on low light environments too. but it grow more on high light environments. Other buce i have in the same tank are doing extremely fine.
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#6
(17-03-2019, 02:51 PM)stuaz Wrote: What fertiliser do you use? Is it old growth that has gone yellow or new growth? It could point towards some sort of deficiency.

I use ocean free p1 and trace. it's old leaves which turns yellow prematurely.
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#7
Never had a problem with buces. Keep the the same as you would anubias and you can't go wrong. Yellowing is usually a lack of something but can't remember what exactly.
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#8
(18-03-2019, 06:03 AM)hasitha Wrote:
(17-03-2019, 02:51 PM)stuaz Wrote: What fertiliser do you use? Is it old growth that has gone yellow or new growth? It could point towards some sort of deficiency.

I use ocean free p1 and trace. it's old leaves which turns yellow prematurely.

Not aware of that Fertiliser but old growth going yellow normally means a lack of nitrogen or phosphate. I forget which.
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#9
Having dredged my head for anything that should remain from A Level biology I came up with "etiolation".

A quick Google to remind me of what it means suggests that this is due to insufficient light and that it usually affects a whole plant. However Bucephelandra leaves are particularly opaque ; so if it's the lower/lowest leaves that are yellowing, then that might be an explanation perhaps. If so, I think I'd just nip them off with sharp scissors if I were worried about their looks.

A further explanation, as mentioned above, may be a mineral deficiency. While one might again expect such a condition to affect the whole plant, maybe  leaves that are already 'stressed' because of some other factor (e.g. insufficient light) may show symptoms first, perhaps. The two elements I've just seen mentioned in this context are: iron and potassium. However ...

My Bucephelandra seem to do fine even though I don't look after them at all. They live in blackwater, and the only minerals they're offered (there are none in the water I start off with) are those that either leach from decomposing leaves or that have travelled firstly through whiteworms' guts and then through fishes' guts. The origin of the latter  minerals is decomposing kitchen (vegetable) scraps which are mineral-rich. But my fish aren't fed every day, so the amount of minerals that find their way from wormery to aquarium water must be very tiny. If you're dosing with a proprietary fertiliser, plus trace, and leaves are still yellowing then I don't think on the face of it that mineral deficiency alone can explain it.

From your picture it doesn't look as though the yellowing leaves are significantly shaded either. So maybe it's just them getting a bit old?!

Left-field thoughts are: the plant(s) may be gearing up to flower and thus concentrating their energy elsewhere other than established leaves ; or their roots may be picking up something the plants don't like from the substrate they're attached to and storing it in leaves which then die back ; or the water contains an over-concentration of some minerals.

Incidentally, Bucephalandra grow naturally above the surface in rivers, attached to rocks etc. They're flood-tolerant, so they can survive immersed (as we know). There's a word for that habit but I've forgotten what it is - all I can remember is that it begins with 'r' and it's got a 'z' in it!


This has been a welcome distraction from my next task. But I suppose I might as well get on with it now. 《Sigh!》
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