^i just put them in a safe tank for a day or two with an air stone, I also use a leaf from a tree that is local to asia (not sure of the name think it's indian almond tree) which has natural meds and anti toxins. Betta fish keepers use it and Koji metioned it before with arow. then i put a load in the tank. The fish seems to enjoy going on patrol for them, it swims closer to the bottom to scare them up then turns into a missle to catch them.
