New tank disease free

[Yekedismekedie]

I have a new(used) tank thats waiting to be cleaned and installed but I wanna do it right this time and make it disease free.

My current tank i think does have Some ich in it, although I now only see my royal gramma rub himself on a rock every once in a while. Problem is that I cant have 2 big tanks in my living room for 3 months because i think my wife might divorce me at that point.

Could I QT all my fish at once in a smaller tank? Otherwise i would have to cycle a whole new tank and transfer my corals to the new tank, keep it without my fish for 72 days and treat my current tank with copper after corals are transferred. (This way my fish wont die from ammonia Spike because they would still have the current live rock)
Dont think my ladylove Will enjoy..

After the whole treatment the question Will be if the new tank can handle all my fish and their bioload being transferred to their new home?

Fishload:
Couple clownfish
Coral beauty
Melanarus wrasse
Lubocki wrasse
Royal gramma
Bicolor blennie
Yellow watchmen goby

I dont think theres a lot of options but I hope you Guys and girls might know of a way how to handle this

Greetings from the Netherlands

 

[EmdeReef]

You could pull it off in a 40g tank with that many fish not to have too much issue with ammonia. Especially if you add some bacterua

then you can treat the fish with copper for a month and let the tank run for another ~2

you’ll still have to keep the fish in a separate tank for 3 months while your display runs fallow, if transferring anything wet from one tank to another.

 

[Yekedismekedie]

I think I might try a local fish store and see if they can house and treat my fish. Otherwise i think the only option is what you suggested.. I’ll let my wife know of the ideas (slowly)