Pet Cove is still open with great livestock and service. Check out the filter I just purchased for my 55 gal build (Rapids Pro Plus Filter) under my pics.
Here is another store that opened this past summer in Johnson City, TN.
Aquatix & Exotix - (423) 610-3474
3900 Bristol Hwy, Johnson City, TN 37601
There are also two really great stores in Ashville, NC.
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Mountains to Sea Aquariums
14 Sweeten Creek Road
Asheville, NC 28803
(828) 707-1766
Coming from I-40 take exit 51 for Sweeten Creak Rd toward Asheville
Turn right at Sweeten Creek Rd, one mile on the left
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The Asheville Aquarium
5 Regent Park Blvd, Suite #106
Asheville, NC 28806
Enjoy!