Eel help


Reefing newb
Ok I have a snowflake eel in my tank that has really grown (about 2 foot long and over an inch thick) and it has reeked havoc on my other fish. He has nocked over the rocks in the tank and squished 2 fish already. So since he has eliminated the other fish in the tank I decided I wanted to just have an eel tank. Is this possible? What other eels can I put in the tank with the snowflake?
People do have eel tanks. I had a snowflake that was a terror too. He went back to the LFS for credit though. I think I remember someone on here saying you can only have one eel per tank though as they'll eat others.