what causes curling leaves? - The Planted Tank Forum
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post #1 of 31 (permalink) Old 10-20-2014, 11:37 PM Thread Starter
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what causes curling leaves?

anubias, some crypts, val nana tiger, dwarf sag.

anubias leaves are curling down

crypt leaves are curling in from the sides some are more drastic than others

vals grow pretty normal but some have a weird bend or curl near the upper portion

dwarf sag shows similar behavior as val nana.

any thoughts?

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post #2 of 31 (permalink) Old 10-20-2014, 11:56 PM
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Without pics or more information, lack of any number of ferts, or low co2 would be my guess.


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post #3 of 31 (permalink) Old 10-20-2014, 11:59 PM
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You will need to provide pictures. Leaf margins can curl upwards, downwards and even become wavy. The tips of the leaves to can curl or even the entire leaf so pictures can help people here identify what is going on.


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post #4 of 31 (permalink) Old 10-21-2014, 02:34 AM Thread Starter
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here are some pics

















ferts i dose are
2tsp k2so4 & 1tsp kh2po4 fri, sun, tues
.5tsp plantex csm+b sat, mon, wed
50% wc on friday morning before lights are on

lights run 8 hours daily
finnex planted plus @ 21" above substrate
substrate is safe t sorb
full fish load which gets fed a variety of food once a day

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post #5 of 31 (permalink) Old 10-21-2014, 02:45 AM
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Quote:
Originally Posted by philipraposo1982 View Post
anubias, some crypts, val nana tiger, dwarf sag.

anubias leaves are curling down

crypt leaves are curling in from the sides some are more drastic than others

vals grow pretty normal but some have a weird bend or curl near the upper portion

dwarf sag shows similar behavior as val nana.

any thoughts?
Hi philipraposo1982,

Do you by any chance have softer water where your live? I do and my experience has been that curling / cupping leaves are typically the result of low Mg or Ca; you might want to try adding some Seachem Equilibrium to your tank.

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post #6 of 31 (permalink) Old 10-21-2014, 02:49 AM Thread Starter
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water isn't soft, but i believe the driftwood in the tank might be making the water acidic
would this remove calcium?

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post #7 of 31 (permalink) Old 10-21-2014, 03:18 AM
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In keeping/w the same train of thought, don't you have GH/KH test kits ?
Now that I think about it I haven't checked mine lately and have changed
the fert list. But my list contains 1/32 tsp MGSO4 and 1/4 tsp CaSO4 to
raise the TDS for both my 10g tanks. That proportion was given to me by Diana. The percent, not the amount in my 10g tank.

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post #8 of 31 (permalink) Old 10-21-2014, 03:29 AM
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This is a great question.
My crypts are doing the same thing.
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post #9 of 31 (permalink) Old 10-21-2014, 04:52 AM Thread Starter
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Quote:
Originally Posted by Raymond S. View Post
In keeping/w the same train of thought, don't you have GH/KH test kits ?
Now that I think about it I haven't checked mine lately and have changed
the fert list. But my list contains 1/32 tsp MGSO4 and 1/4 tsp CaSO4 to
raise the TDS for both my 10g tanks. That proportion was given to me by Diana. The percent, not the amount in my 10g tank.
i do have that test but i never really understood what the values ment
or where i needed to be.

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post #10 of 31 (permalink) Old 10-21-2014, 11:59 AM
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For me it seemed to be a calcium deficiency. I did a healthy sized water change and all the new growths had no curl to them after that. All the previous growth remained curled, but eventually it all got pruned out.
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post #11 of 31 (permalink) Old 10-21-2014, 01:17 PM Thread Starter
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So you think my 50% weekly is not enough of a WC to keep calcium levels up?

I know my tap water is harder than my tank.

Bump: I will test GH and kh when I get home

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post #12 of 31 (permalink) Old 10-21-2014, 02:58 PM Thread Starter
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Something else I noticed and didn't put much thought into it until just now is how a couple other plants have been growing.

Bolbitis, this plant I got near death, I attached it the DW and waited. Sure enough a ton of new shoots come out and I cut the old dying ones off. The thing is the old dying ones were standing verticle as expected. But the new growth although healthy lookin, is growing horizontally almost flat.

Also have a aponogeton undalatus I think spelling is wrong but its leaves are laying flat too.

Thoughts?

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post #13 of 31 (permalink) Old 10-21-2014, 03:02 PM
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Your plants look normal. There is a normal degree of downward curling when plants are grown underwater and yours are no exception. Emersed and submersed leaf shape are different so perhaps you are noticing that difference.

Horizontally growing plants is usually caused by good lighting.

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post #14 of 31 (permalink) Old 10-21-2014, 03:06 PM Thread Starter
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Hm . So maybe I have nothing really wrong? Thing is both crypts and anubias and Val's all grow very well. New growths that are pretty common and healthy.

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post #15 of 31 (permalink) Old 10-21-2014, 03:51 PM
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Yes the plants look healthy in the photos. I do not see signs of nutrient deficiency.

On a different note, are you adding nitrates or do you have root tabs in the tank? I didn't see them mentioned in your fertilizing paragraph.

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