Lucy's Lagoon is still open. They've scaled back a LOT from what they once had, and they are talking about going out of business.
I was in there last week and picked up a beautiful powder brown tang. They've still got a few corals, fish and supplies.
Here's the address:
3306 9th Ave SW
Huntsville, AL 35805
(256) 533-6255
HTH,
Mariner