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PostPosted: Sun Dec 28, 2003 9:43 pm 
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Joined: Sun Dec 28, 2003 8:57 pm
Posts: 11
Location: Palmerston North
I have had Java ferns in the past where the cells on the leaves start turning brown and rot spreading throughout the leaf. This seems to be able to spread to leaves touching each other. A few years ago I had a whole 6 foot tank wiped out when I purchased a few ferns from a pet store.

It is definitely not the standard dark patches that can form on java leaves.
It spreads very rapidly!

I have recently got back into fishkeeping and a friend has still got some java fern with similar looking symptoms (we bought the ferns from the same pet store years ago), I would like to propogate some ferns for my new tank but not if it means getting this problem into my tank like in the past.

Wondering if anyone knows the cause, has experienced it or knows how to get rid of it?


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PostPosted: Sun Dec 28, 2003 10:49 pm 
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Joined: Tue Jul 24, 2001 12:00 pm
Posts: 974
Location: Hamilton, NZ
I've experienced it but can't really offer any explanation. My ferns, while getting pretty hammered by it have always come away again.


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PostPosted: Mon Dec 29, 2003 3:31 pm 
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Joined: Tue Feb 04, 2003 2:52 pm
Posts: 96
Location: Auckland
Yes, I too have experienced this type of Java Fren die-off.

As Rob says is comes and goes. Do you use any fertilisers?

Normally when all the other plants in my tank are growing well, I have no problems with my Java Fren too.

Good Luck

Blueram


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PostPosted: Tue Dec 30, 2003 9:31 am 
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Joined: Tue Feb 04, 2003 2:52 pm
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Location: Auckland
Casanae,

I found an article in the Practical Fishkeeping mag that said dark patches are due to too much light and floating plants would help rejuvenate the Java Fern.

Hope this helps :D :D :D

Blueram


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PostPosted: Thu Jan 08, 2004 3:17 pm 
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Joined: Sun Dec 28, 2003 8:57 pm
Posts: 11
Location: Palmerston North
Have been told that it is possibly a genetic disease, maybe temperature related. I don't use fertilisers.

I just have to try and get rid of infected leaves before its too late, it spreads from leaf to leaf.


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 Post subject: JAva Fern disease
PostPosted: Thu May 31, 2007 7:24 pm 
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Joined: Sun May 13, 2007 3:31 pm
Posts: 61
Location: Wellington
I'm bringing this thread back from the dead as I have just aquired some java fern at expense and it seems to have a similar disease.

Leaves are turning brown almost black at points and becoming raggedy, there are holes forming through the worse leaves. Some leaves are untouched...

Over all (from a distance) the plant appears green and healthy. But most have this brown discolouring and about 40% at least seem better off to be removed.

I won;t be able to take these to the LFS till Sunday so am left keeping them in a holding tank with thermo. Another concern for me is if these are badly diseased (as they certainly seem) that they will be contaminated with all sorts of other diseases too...


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 Post subject: Pics
PostPosted: Thu May 31, 2007 7:32 pm 
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Joined: Sun May 13, 2007 3:31 pm
Posts: 61
Location: Wellington
Image
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PostPosted: Thu May 31, 2007 8:49 pm 
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Joined: Sat Jan 14, 2006 9:03 pm
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Location: Te Puke, BOP
i would say its a nutrient issue if anything, not a disease. im not sure what type of nutrient issue though :lol:


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 Post subject: Nutrient..
PostPosted: Thu May 31, 2007 9:02 pm 
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Joined: Sun May 13, 2007 3:31 pm
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Location: Wellington
That was my first thought when I saw it Sharn - that it was just like land ferns that the bottommost leaves discolour and die with lack of light. This could have come froma very heavily populated tank.

I've had salt water and chlorine suggested to clean the plants incase it is infectious but don;t want to risk any of that till I have some idea of it's risk to the tank.


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PostPosted: Thu May 31, 2007 10:00 pm 
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Joined: Mon Dec 20, 2004 8:05 pm
Posts: 1577
Location: Auckland
Sometimes this just happens to java fern. I've had it happen several times over the years, both in tanks that are fertilized and not, it apparently just happens. The advantage of having multiple tanks is that you can always just reseed. I'm actually in the process of having it happen to a tank at the moment, it's a 490L tank with a low watt/litre ratio, lightly stocked. Where'd you get the java fern, Captain?


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PostPosted: Thu May 31, 2007 10:20 pm 
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Joined: Sun May 13, 2007 3:31 pm
Posts: 61
Location: Wellington
Bought a largish amount on trademe. No photo and no mention of the plants being in this condition. More is listed so if this plant is a disaster then I will be pursuing with seller/TM. (No names until I have their response to my email)

If I remove all the leaves affected I would have very little left. Basically I don't know if I should just bin this lot... Salvaging what's left to expose my tank to who knows what contaminants seems unwise.

If this is a nutrient issue and can be confirmed then I'm annoyed but at least it isn't a complete waste.


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PostPosted: Fri Jun 01, 2007 5:18 am 
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Joined: Thu Oct 13, 2005 5:38 am
Posts: 13136
Location: Christchurch
I have quite a bit of java fern and this is something it tends to do but I have no idea why. You can find completely dead black leaves where the rest of the plant looks perfectly healthy. I haven't seen it spread to all the plants so I don't know what that could be caused by.


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PostPosted: Fri Jun 01, 2007 9:02 am 
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Joined: Sun Jun 05, 2005 10:08 pm
Posts: 2884
Location: Lower Hutt
Captain Conkout wrote:
Bought a largish amount on trademe. No photo and no mention of the plants being in this condition. More is listed so if this plant is a disaster then I will be pursuing with seller/TM. (No names until I have their response to my email)


It wasn't me!!!!! was it? :P

I notice that there's a trademe seller of java fern up in auckland. It's already been noted by the plant growers on here that the plants are grown emersed (out of water) and will possibly have a transition period while adjusting to being put underwater which will include leaf loss, etc.

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 Post subject: sorry to butt in
PostPosted: Fri Jun 01, 2007 10:59 am 
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Joined: Sat Feb 03, 2007 3:52 pm
Posts: 37
Location: Wellington /NewZealand
But i was new to plants and thought id give java fern ago but i had the exact same problem with the leaves looked black at edges and i brought mine off trademe also, in the end i took it out of my tank like i say i was new to plants in tank and was worried it might affect fish, I wasnt really sure what else to do guess i should have just asked lol :oops:


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PostPosted: Fri Jun 01, 2007 1:22 pm 
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Joined: Thu Apr 14, 2005 11:04 am
Posts: 666
Location: Christchurch
I have a similar thing happen with my Java Fern and the leaves that turn brown get new little baby plants on the end of them, I just assumed that the leaves were old and dying off, most of the plant seems healthy and even better now I have some ottos to clean them and keep the algae at bay.

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