Hi, I know it’s an older post but has anyone actually used Paraguard for QT? If so, how would you dose it and how often? I do have PraziPro on hand but is it safe for invertebrates? How do you quarantine shrimp and hermit crabs for instance? I only have experience with one clownfish and started up a new tank after two years so I’m a little out of the loop on QT procedures and not had SW invertebrates. Is treating with copper a must for vertebrates even if they look healthy?