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PostPosted: Jun 29th, '10, 15:27 
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Seriously, this cant be healthy.
Seriously, this cant be healthy.
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I lost one fish today and have another sick.
the dead one has some fraying at the tail
the sick one has white patches. Looks a bit like mould, and fraying at the tail.

Does anyone have any ideas?

water tests show all good with a slight spike .25 in nitrites (I'm guessing due to the dead fish)

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PostPosted: Jun 30th, '10, 10:37 
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Seriously, this cant be healthy.
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the white patches on the sick fish have cleared up a bit but now he is swimming upside down.

What causes fish to swim upside down?

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PostPosted: Jun 30th, '10, 10:40 
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from what i found, it sounds/looks like ich..
have you salted the water? that may help.. i believe it's 3ppt you want to shoot for

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PostPosted: Jun 30th, '10, 10:51 
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No, ich is distinct white spots, looks very different to the fungal issues Bullwinkle appears to be having.

Salting the water is the only things you can really do, as well as isolate the sick from any helathy ones you may have.

One of the wonderful twists of fate we have workling for us on the aquaculture side of AP is that freshwater diseases and parasites die in saltwater and marine diseases and parasites die in freshwater. There is the odd exception, but it's a pretty solid rule of thumb.

You could give him a salt bath, but don't hold me responsible for the consequences when we're talking about such a small fish. This involves transferring him to seawater strength salwater for a short period of time. It's a little problematical for you as the sign that the fish has reached it's endurance is when it roles onto it's side. If the fish is still swimming upside down, I'd give it 3 minutes, max, and repeat it two or three times during the day.

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PostPosted: Jun 30th, '10, 13:31 
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there was a post by rupert a couple of weeks ago suggesting a disease like this was called "Sed". might be worth a search. it was in a koi article.

its a cold water fungus that is very hard to kill. I'm pretty sure its what killed the 15 SP i put in my new system. they looked very much like yours do.

I believe salting to 6ppt for a couple of weeks might help, though it was too late by the time I realised I had a real problem

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PostPosted: Jun 30th, '10, 16:35 
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ok thanks for your suggestions. this part of aquaponics sucks a bit :(

the sick one has been in 4 ppt salt since i found it yesterday and is isolated. its still kicking, but spends a lot of time upside down.

can I salt my system ie with GB (rather than the guy in my kitchen living in a glass jug) to 4 ppt as well of will that kill my nitrifying bacteria? Only 3 months ago I didnt have any concerns for the health or otherwise of bacteria.

the rest of the fish in the system are salted to 1 ppt. They all seem fine at the moment but I have had a lot of losses ---> viewtopic.php?f=1&t=7628 and I was never really confident of what caused the other deaths.

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PostPosted: Jun 30th, '10, 17:04 
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I beleive you can go to 5ppt but do some searching is plenty written about salt, the plants won't survive to well past 5 from memory, Rupe is the man to ask or Outback Ozzie

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PostPosted: Jun 30th, '10, 17:20 
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viewtopic.php?f=2&t=7722&p=235091&hilit=sick+koi#p235091

Sorry, got the disease name wrong, its sap. There's a good link in that thread covering a number of different diseases.

I'd definitely quarantine any sick looking fish to at least 6ppt salt for a while and see if they recover. but from what I've read, its pretty much all over by the time you notice, especially for table fish where you cant use Malachite green.

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PostPosted: Jun 30th, '10, 17:47 
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that link is great thanks

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PostPosted: Jun 30th, '10, 17:53 
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Nocky wrote:
I beleive you can go to 5ppt but do some searching is plenty written about salt, the plants won't survive to well past 5 from memory, Rupe is the man to ask or Outback Ozzie

Come on rupt you is the man

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PostPosted: Jun 30th, '10, 18:38 
Strawberries, peas, cucumbers... struggle with 3ppt... most other plants will cope with 6ppt... at least for a few weeks...

Some "fungal" diseases are best treated by salt baths/dips... of 10-12ppt, while heavily aerating... for 20-30 mins... then into 6ppt...

If you're salt bathing/dipping... and your fish show any signs of distress... remove them immediately... and remember to aerate vigourously...

Basically... the salt bath/dip... is like rubbing salt into the wound... it seals/cautorises/sterilises the wound... and/or "shocks"/kills the fungus...

Followed by a 3-6ppt environment... helps kill off any remaining fungal spores... and stimulates slime coat production and healing...


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PostPosted: Jun 30th, '10, 19:52 
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Agree with Rups recommendations here though when I have treated for fungus the initial salt bath has always been 1 hr rather than just 30 min.
I had a few fingerling silvers with fungus last winter and tried a few different methods to treat them. I found that unless I heated the water as well as giving the salt treatment it was a waste of time. Most of the fish I just treated with salt died where as those where I heated the water and salt treated survived. This isnt gospel just how it worked for me.

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PostPosted: Jul 1st, '10, 11:50 
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bloody hell you really aren't having a good run with those fish. Last year we lost a lot of fish to winter disease (ie SAP) but this year none. Beats the hell out of me why you are having such problems. My water temp is now at around 10 degrees and they are still feeding hungrily every 3rd day or so.

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PostPosted: Jul 1st, '10, 12:49 
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The west Oz ones feed like piranha's daily :dontknow: :D

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PostPosted: Jul 1st, '10, 13:22 
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Not even half way thru winter yet though Mon. The ones I had trouble with last year were in cages in the ponds and they didnt develop fungus until much later in the winter. No probs so far this year yet even though it has been a colder winter so far.
Mon are you still carrying some fish over winter in the tank heated by the wood fire??

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