Hi,

next update :D
The fish are definitely better. 10 days have passed since I started treatment, I changed 50% of the water after the 5th day and re-dosed the medicine afterwards. The lights are still out, algae are gone, and the moss grows like crazy.

No losses, the fish are eating, itching seems to be gone. Now I'll do another water change tomorrow and run another 5-day period of medication. After that we ought to have won the battle, right?

Man, I can't wait to see this tank with the lights on...

Cheers
Ulli