so i'm the lucky one., after 6 years of reefing, bang, ich.
I got some new fish (and have to admit, have never used a Q tank)
now, my powder blue is gone, as well as sailfin and tommy tang.
locking at this transfer treatment, I wonder if I should take all fish out of the DP tank and put them in a 3 day cycle.
question is, what happens with the parasites in my tank when it is empty from fish?
do thy die off eventually ? --- not that all my fish are free of it in 20+ days, but thy get it from whatever is still sleeping in my tank
other question would be is where douse the parasite come from ?
I know thy say stress and such is a factor (to make it bloom) but where douse it start?
Se suppose I do the transfer treatment, even if it would be for 30 days, and assume thy are all free, than get new fish (Tommy, powder blue and sailfin)
I don't put the new fish in the DP tank, but also in a 3 day treatment for 30 days (afterwards considering them free)
is there any remote chance that ich would still get in my tank.
in other words, there are always ich parasites in sleeping mode somewhere that don't die
or in other words, a fish fully free of ich can never get ich again from within a system that douse not change / receives new (external) fish ?
In order to eradicate ich from a tank requires 72 days of having no fish in the tank since ich has an obligate need for fish as part of its life cycle. Stress does not cause ich, a parasite called cryptocaryon irritans causes "ich" and that can be eliminated using tank transfer (copper, CP or worst case, hyposalinity).