Cecil,
I am not really sure what to do about your sloshing problem, but I have to travel about 1 in a half hours to my pond when transporting fish and I use otabs for oxygen. 1 Otab will last for a few hours. They are quite amazing little tables. I got mine at
http://www.otabs.com. They are about the size of a 50 cent piece and your get like 36 tablets for 23 bucks. I have transported as many as 400 shiners in an 18 gallon bucket using only 1 otabs for the hour and a half drive. They also work great for aquairums if you have a power outage and need to get oxygen into your aquairum until the power comes back on.
