I ordered from bluezooaquatics and need up with ich. I have a blue tang,butterfly,2 clowns and a wrasse in qt. I'm on my 21 st day dosing coppersafe. I'm monitoring it and having no luck with the tang. The rest of the fish show no signs for a week. But the tang can't kick it. He is eating everything I put in but ich won't die. I have fw dipped him multiple times. It looks like small copepods come off of him sometimes what could that be