Yeah it does. But you fill and drain the tank a bunch of times to get it out. Then i ran the tank for a couple weeks with no fish and tested the water with a master kit, to make sure all the levels were good. They are. No problems since.
Nice sevs! I have 6 red spotted golds and 5 orange shouldered green severums. Of course they are all juvies. I love the personality and demeanor of severums and I have always called them the Poor man's discus! And they are hard to get now so I had to go to Aquabid and cough up the cash for them!
I would ask your lfs if they can get them for you, it will probably be much cheaper. The shipping charges are sometimes as much or more than the fish you are buying.