... In Germany it is not standard to quarantine fish so nobody in my environment can advise or help me.
...
It's not much different here. Quarantine is by no means the standard in the US as well. I would bet 95% don't do it. And most that do it now, started it only after a bad experience.
All my old German books (Mayland, Baensh, Klausewitz,...) would state how important quarantine is. And books were pretty much all I had back then.
As a beginner in the late 70s I quarantined and followed the books religiously. My problem was that I saw diseases that were not there and simple treated the poor fish to death with all the chemicals I threw at them. Few fish ever saw the DT. It's what happens when you read too much up on diseases and how horrible they can be.
At some point I just decided to roll the dice and put the fish straight into the DT. That worked actually better, but also not without losses
Though, after a while I found the right balance. I continued quarantining with a lot of fish, especially new clownfish. Though I also skipped it quite often with other fish.
In 25 years I never had a system wide outbreak or tank wipe-out.
It all comes down to infrastructure. We have it, they don't. They have a long tainted history, we are relatively young all things considered
We started from scratch for lack of a better word and that is why we are this way. Not right, nor wrong - but that is how I see it especially after spending a month in Ireland...
Do not make the mistake of confusing the British Islands (incl. Ireland) with the rest of Europe. The brits like to keep their old stuff around and still try to hold on to the long gone greatness of the British Empire. That nostalgia of the good old times is one reason why they just voted themselves "off the island".
Germany has a far better infrastructure (NL too) than what I've seen so far in the US, not just transportation, but also energy and other utilities. It was in fact the German Autobahn system (invented before Hitler came to power) that inspired Eisenhower to start the US highway system (though it's a rather bad copy).
Sometimes it also has its good side to lose a war and get everything bombed flat... you can start over fresh and avoid past mistakes (not just with infrastructure, but also with the government and the constitution).
). But due to the fingered invoice the tax was the only thing they caught us with.
Probably not on topic. I will say tough I don't quarantine. Not set up, never have, it probably isn't wise, etc. I am considering it with the new tank though but I don't have room for a large QT. So not sure how that is managed with larger fish, even small, such has tangs, etc since all I have to work with is a 29 gallon bio-cube.
