So sometime in July, I had marine velvet wipe out all my fish in 2 days time.... so i'm trying to restock now. I started up a QT and have 2 fish in there currently waiting for fallow period to be done with and for 30 day treatment with copper before they go in the DT. I'm real busy throughout the day with kids and work. Usually I try to do what needs to be done for these tanks whenever I have time. Usually it's the same time of day. When I'm working on both tanks doing things such as feeding, water testing, etc... How do I keep from cross contamination?? I've read about transmission being as easy as aerosol transmission. Is washing my hands with soap between working on each tank enough? Or would just leaving my hands to dry before starting on the next tank suffice? What are your procedures to keep from cross contamination??? Thanks in advance.