This stuff is valonia. Very bad stuff. I got it in my tank years ago, and cannot get rid of it. Emerald crabs and Desjardini tangs will eat it, but are more fond of other stuff.
Fish Safari is in VA Beach, and is a very god LFS. A little expesive, but the owner is great and the staff pretty good. Animal quality is superb.
VA Beach also have Animal Jungle, which used to be good, but now is too large and has a minimum wage staff.
Southern Pets in Wards corner Norfolk is very good. They have been in business for every. The owner there taught me a lot.
There are a few others, but I do not remember their names. One @ Hilltop (Discount Pets??) is pretty good, and the prices are reasonable.