He died that night. It was my first death in 2 years sinced I cycled the tank.
I saw the pictures on the FAQ. And it definately looked like Brooklynella. Of course I didn't have Formalin, and it was 10:30 on Sunday night.
The last time I saw him, was the previous night. He looked absolutley fine. If there was something wrong I would been on it immediately. The next time I saw was a night later on the bottom of the tank in really bad shape ( just like the picture in the FAQS of the clown with the advanced Brooklynella).
The thing that kills me is that I have no I idea what would have caused this. I haven't introduced any fish or inverts in 4 months, and every damn test on my water is perfect. The only thing that I have done recently is add a new homemade counter current protein skimmer and thats it.
Two days later, its might-have-been mate is perfectly fine and so is every other fish in the tank ( THANK GOD )
So I guess I'm lucky on that account, I just really don't feel like it, you know.