Clownfish problem

[425nm]

Originally Posted by Kraken

From the top of my head I remember that I read a research paper stating that hypo had little to no effect on ich. I will cite it once I get back on my computer.

Hypo can work. What you're probably remembering is that there are numerous localities/subspecies (I forget which) of Ich that all have varying degrees of resistance to changes in salinity. So hypo might work on some ich outbreaks but not other. Best to go with copper as you've previously stated.