I posted in more detail on Reefs... (as a rant, not looking for advice per se)... I've not been around my home much due to a family situation, and I'm pretty sure I've lost 2 fish to this already. Have no Formalin in the house, will try and get some tomorrow before heading to the hospital but I know Brooklynella can progress quickly. I'm feeding medicated flakes in the meanwhile.
No other problems, I have been lucky to have no disease in my tank for many years.
Thanks for the advice.
Katie