Pet Showcase in Hiram, Ga. on 278 They seem to be pretty clueless, and salt water centric. Fairly small selection of fish. Prices on goods are about 30% above Petsmart. Offered to sell me their RO water to seed my new tank with beneficial bateria.
Petland in Dunwoody, GA. They have about the best selection of freshwater fish I've found, and have a good deal of salt water fish as well. Prices on goods are about average. On average, their tanks are well maintained, but about 1 out of 3 times they have a massive ich outbreak, and the next time I come in, they have new/different fish in most of the tanks. No warrenty on fish, but then I've not lost any I've bought from them.
Cappucino bay in Marietta on 120 is a great looking place, but it is all salt water. don't know mch about SW, so can't really comment too much.
Petsmart in Hiram, GA on 278 - about a typical petsmart. Decent selection, no SW. Rarely see the same employee twice. Told me discus are brackish and can be acclimated to saltwater.