He's currently in my 20g tank, but hopefully will be moving into the new 65g predator tank Mid april ish (Custom stand is being built, need some time and $ to get it all ready) Currently he's about 6-8" long, and around 3/8" diameter.
Here's how the new tank currently looks - borrowing the UGJ system used by the Rift lake folks, so I don't have to hide a bunch of powerheads in the tank + the hardware for the overflow.
He is currently alone in the tank, when he first went in - he was sharing with a ~2" dragon wrasse, and a 4" dwarf fuzzy lion. The wrasse dissapeared that night (Still haven't found remains) 2 days later the lion was found jamed up under the mount for the skimmer - disemboweled. Talking to some more knowledgeable eel folks, sounds like it was probably a territorial thing - he's now largely taken over that left hand side of the tank (which was the wrasse/lions domain). Not a typical behaviour for a Snowflake, but apparently it happens.
Andy