All stores are closed in germany now so no option...So they're already at your house?
If so, not much you can do now. Hopefully they'll be fine. Them being an airbreather definitely helps.
Keep them in the dark, and tell her not to be too loud around them so they will have a lower stress level. That's all you can really do now.
If they're not there yet, and they are coming tomorrow, I'd go pick up some amquel. And I'd unhook an airstone from a tank if I needed to. How do you have 0 airstones??? At least one of your tanks has to have one.....
if you have an airstone in your other tanks use that, the filter should oxygenate the water fine for a couple hours, especially if they're your channas
Kingsleyae are swarmfishs and get stressed when alone. Also i can´t seperate them in that case. I doubt my girl would do that.i'd seperate them if possible since every single anabantoids have been aggressive with one another