My only question is that I thought ich needed copper over 14-30 days to eradicate
Could this, which is over 11 days eradicate the ich?
I'm pretty sure this product is ionic copper. The copper we typically use in the US is amine-chelated copper and it is less toxic tot he fish, but requires a longer treatment time - 30 days. Ionic copper is more toxic, so you need to use shorter treatment times. However, when I used to ionic copper, I would still go 14 days beyond the date that the last symptoms were seen. You need to follow the instructions for this product since it is blended with formalin and I don't know the copper dose they are using.
Jay