| Need a little help...
Bought a group of 5-7" koi which arrived yesterday after 48 hours in transit (I paid for overnight but was sent 2nd day). Miraculously these koi survived and are in quarantine. Of the 7, one appears to have a red furry spot on its caudal fin, another has a bloody split in its caudal fin and the scales are raised at the end of its tail tube closest to the fin. I have neither salted the quarantine tank nor have I added antibiotics. Water is a good 7.8ph, 0 nitrite, 0 ammonia. Big air stone, biowheel filter, 50 gallons. Everyone was flashing yesterday--I'm thinking that the ammonia content in the bag they shipped in may have caused the flashing (it was waaay off the chart when I tested it). They don't seem to be flashing today.
What should I do for the two that have fin problems? I don't believe these happened during shipping--they look too aged. Should I treat all of the fish with something, or do a wait and see? Should I remove the most healthy and put them in their own clean quarantine or is that a moot point at the moment? I'm never quick to medicate, so any advice would be appreciated as to whether I should and what with...
Thanks,
Marie
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