Recently purchase a aquarium, light, filter, substrate, etc .... I should have done my homework first. The clerk that help me was clueless and had to call the manager over to answer simple questions. I told them that I wanted to setup a freshwater planted aquarium. The manager / owner(?) said the stuff the clerk selected was what was needed. After going home and doing some research I found almost everything they sold me was wrong for my set-up. I am not sure if they were dumb / lazy or both. I will never go there again!!