Med quartet?

[Zipgun]

I have 4 quarantine tanks running right now, all local wild caught fish. Did the med trio treatments and separate levamisole treatments. Everything looked good after a few weeks- one ammonia spike, my fault, and a few jumpers, but majority came out fine. Then two of the tanks came down with a nasty bacterial infection that was shrugging off the maracyn when I target treated the tanks. Aggressive infection that went from some small patches to most of the body over night. I then switched to a combo of maracyn ( which mostly treats gram positive bacteria) and Fuan-2 (which treats mostly gram negative bacteria) and the combo knocked the infections down in two days. (I am going to repeat the duo-treatment after a water change)

Now that I know that the local waters are likely to have a gram negative bacteria present I will stat using Furan-2 as part of the quarantine process. I may try just adding it to the med trio and make it a quartet in one of the next batch of quarantine tank and see how it goes. 

Has anyone else tried mixing a medication for gram negative bacteria in their med trio quarantine process?

[Daniel]

I wonder what effect this would have on beneficial bacteria since many of those are gram negative?

[Zipgun]

Good question. The Furan package does say it may damage the bacterial filtration. But my other option was methylene blue and that would have nuked the tank. 

[Daniel]

2 minutes ago, Zipgun said:

Good question. The Furan package does say it may damage the bacterial filtration. But my other option was methylene blue and that would have nuked the tank. 

This is the challenge of keeping fish, one thing thing affects another thing, which upsets another thing. Eventually you just pick the lease bad path. Keep us updated on your progress!