The ulcer may start to heal as soon as the water warms up, since the koi
immune system is negligible at temperatures below 50 degrees, but it could
allow the bacteria into the blood stream and kill the fish also. There is a
product named KoiZyme that is excellent at keeping the bad bacteria
population under control, which could help to cure the fish, but if not
directly help, keep the bacteria levels down so that it doesn't get worse.
The ulcer really needs to be treated with some form of topical treatment to
kill the bacteria on the wound. The treatment could be iodine, a pp paste,
betadine, followed by use of antibiotic cream. Only one treatment with the
iodine, betadine, or pp is needed or recommended. The first aid cream can
be applied multiple times to help with the healing, but shouldn't be
necessary. The other treatment is antibiotic injections or medicated food
like Debride. Except for the food, all methods of treating the fish require
catching.
"John" wrote in message
m...
My Biggest Koi (18'') have started having ulcer since two month ago
and it is getting worse, I only captured him once and applied the
medicine, (trust me,it is very hard to capture a fish in 6000 gallon
pond) what should I do? (I do not have a quarantine tank yet) will he
died from it or it will eventually recover? what else can I do?
My other fishes seems to be doing fine. (ammonia,nitrate (nitrite?)
all 0 )
Please advice.