Originally Posted by gotz_potential
I've done some research and although this may not pertain to you this may be helpful to others. I've found that Marine Velvet's (Oodinum) life cycle is alot shorter than Ich's by at least half of more. This is not to say you can assume shorter fallow periods, as sometimes Ich can be mistaken for Velvet and vice versa..Unless you are 100% sure as to what you got, the longer fallow periods are the safer way to go.
Yes Don, this is true and I agree. But I would like to add that a longer fallow period is required to make absolutely sure the parasites are gone, because it is so deadly so quickly.