IMO, Aquarium Depot reminds me of Exotic Aquatics in that it has a large selection, but spread over more space. Each has stuff that the other doesn't; Aquarium Depot carries Seachem ferts, while EA doesn't. AD looks sort-of run down these days, but that's probably because the store was recently relaunched by a new owner after the previous business failed. If you're interested in plants, the ones at EA look much healthier than the ones at AD. By the way, the plants at the Petsmart in Towson are pretty healthy too, even if their selection is limited. Hope that's helpful.