Thread: Fin Rot
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Old 28-05-2004, 05:09 AM
NetMax
 
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Default Fin Rot

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It's a roll of the dice. While it'll certainly depend on whether the
origin was fungal or bacterial, the probability of re-occurrence does
decrease with time. After only 5 days of isolation, with cured
Angelfish, I'd guess your odds were 80% for re-occurrence. After 2
weeks, your odds might still be well above 50%. Increasing the
temperature in the 100g will help, but again, it's degrees of
probability, that your pathogen will react negatively to low heat. Salt
works too, but the concentration has to be considerable.

Treating the whole tank is the only 100% effective way to avoid
reoccurrence, but a tank without fish can be treated without needing
antibiotics (ie: bleach dip, salt, dehydration, scalding water etc). I
usually take a middle road, doing some degree of cleaning (depending on
the severity & treatability of the disease) ie: water changes, gravel
vacuuming, changing filter media, making sure there is nothing alive to
carry the disease vector. If there are no plants, than a hot water rinse
is easy. If plants, bleach dip or leave them. Then I'll pick a healthy
fish to be the 'canary'.

Antibiotics are typically 3 to 5 dosages on alternate days, with option
to repeat entire treatment 3 or 4 times. By treating the fish off-line,
I find 1 treatment usually effective, while in-tank, 2 treatments are
more typical. Moving them back into the main tank, I might put in a
single day's dosage and then avoid water changes for a week or two while
keeping them under observation. It's really a crap shoot, and you play
it as you go along. Stress kills fish and medications and tank moves are
also stressful. Strategy may be determined by the value of the fish,
while daily decisions are made according to observations (appetite,
colour, symptoms etc).

Perhaps Frank in a.a will have some ideas on how to sterilize a 100g
planted(?) tank without using antibiotics or destroying the plants.
--
www.NetMax.tk

"Sir Douglas Cook" wrote in
message ...
Thanks for the Prompt Reply,
You made me laugh a couple of times,,,
Yes, it is my Angels that I am worried about.

So is treating the whole main tank, the only way to avoid reoccurrence?

Many Thanks in advance.

--
Sir Douglas Cook

http://www.greyspace.bravehostNOSPAM.com/
Remove "NOSPAM" for correct address
London Ontario Canada
Aquarium Maintenance Man for Hire


"NetMax" wrote in message
...
"Sir Douglas Cook" wrote in
message ...
I have a 100 gallon fresh water tank with 12 angelfish, or 6

breeding
pair.
I discovered that I have a couple that stayed up in the corner, at

the
time
I thought it was just what fish do, territorial and stuff.

Weeks later I noticed their fins starting to look as if they are

melted.

Yesterday, I removed all the angels and put them in a sick tank
and I am now treating them for "Fin Rot".
With, Maroxy and Maracyn...

My question is about the Main tank,
I have removed the plants and turned up the heater to 86 decrees

and
added
a hand full of aquarium salt.

My question is what should I have done, if anything to make sure

that
there is nothing nasty in the main tank when I return my angels

after
five
days
of the sick tank???????????????

Many Thanks in advance
--
Sir Douglas Cook



Your tank or a customers? The best way to wipe out bacterial

infections,
is to treat the main tank. However, the fastest way to cure your

fish is
to get them out and treat them in new water, so ymmv. I've never

read
any reference to the time it takes for bacteria to die-off in an

empty
tank. All sterilizing techniques will also wipe out your biological
filtration, and most delicate plants. I've sometimes used a

combination
of massive water changes, gravel vacuuming and changing all filter

media
(for planted tanks). Unplanted tanks are much easier. Fin rot might

be
fungal or bacterial. If fungal, it might have coincided with

something
else parasitic. This fungus/parasite combo is a bit easier to

eradicate
that a stubborn bacterial fin rot, so again ymmv.

Personal advice (and not backed by any documentation), some of these
diseases are very species specific. There is a good chance that

another
type of fish would be unaffected if dropped into the 100g right now,

and
if the Angels were cured in the hospital tank, that they would

relapse in
the 100g. *I hate fish diseases*. Whatever your strategy, you might

need
to go one last round of medication after you move the cured Angels

back
into the 100g, just be prepared and watching for it. On the up side,
their immune system will be in far better shape for a gentle round 2,

if
it occurs.
--
www.NetMax.tk