Ok, well the med is Formalit 1 from Aquatronics. Which is 15% Formaldehyde combined with Malachite Green & Copper.
I used as instructed to. 1 drop per gallon if it is freshwater, 2 drops for marine use. Nothing on the instruction says baths. You add to tank, at least with this specific product.
Anyways the point is void now, unfortuanally the fish didn't make it through the night.
My only question now is doing a google(msn or yahoo search didnt bring up anything) search on brooknyelle yeilds about 10 different sites. SWF gave about 4 different topics. Some sites say to do a 2 part bath(one of formalin then fresh tank water) then put them back in your display, some say qt then do baths, some say do both a freshwater dip and a formalin dip then back into a qt.
Nothing mentions on how brooknyella spreads or how long it is you leave your display empty for.