Guns don't kill people..... People kill people.
very sad
My hippo would get a slight case of ick when I did a water change or just a top up. It would only last a day or so at the most. What I realized was happening was, he would get slightly stressed and then was fine after a day or two. He is probly only reacting to the move from one tank to another. Sensative little buggers.
HTH.... Have a safe trip