If a freshwater fish or invertebrate dies within 7 days of purchase we will offer a store credit or replacement if you present the remains of the fish, your receipt of purchase, and a separate water sample from the aquarium that shows safe conditions in a water test. If the pH range, ammonia, nitrite, or nitrate readings are determined to be the cause of death, we reserve the right to offer any store credit. Likewise, if the animal dies due to aggression from tankmates or fighting we will not offer a store credit or replacement. All returns are for in-store credit at the original store of purchase only...NO REFUNDS!