The first treatment series with ivermectin has not completely removed
all the worms yet. I will replace 1/2 or more the water and after a week
treat again.
If the larvae may live in the gravel, filter, etc and reinfest in 3
months how about a routine treatment again in three months ? Maybe that
would get all the residual worms?
The good news is that so far I have not lost any fish to either the
worms or to the ivermectin.
Thanks Again, Dianne