My fish are dropping like flies
I suspect an advanced case of velvet. There is a dusting of white all over them that I just noticed this morning. Not ich....much smaller. I've lost 2 angels, a cory and a platy since this morning.
So I am treating with Pimafix and melafix. Is this ok? it says that this will get rid of it but I'm wondering if those of you who have been through this before can tell me how you got rid of it? This is totally my fault for being a stupid newby at this

I don't have a quaranteen tank set up yet and went out and bought two angels that i noticed were acting kinda weird when i got them home. They were the first to kick off and now my (previously healthy) other fish are rapidly dying....ACK!
My water perameters (sp?) are good. My ammonia is non-existant, my nitrite is 0.1 and my nitrate is a 3 (5 being the lowest on the test but the color is several shades lighter so I am guessing a 3)
Any advice would be much appreciated
Carrie