I am just got my 120 gallon aquarium set up and getting ready to start cycling. I have been trying to read as much as possible but still have a few questions. A trip to the LFS convinced me to go the African route. I love the vibrant colors. I know I want Yellow Lab.they also showed me a blue fish but I can't remember the name. In a 120 gallon tank how many Africans can I keep? Ive seen that it is better to overstock to prevent aggression. I've seen that it isn't good to keep two of each species, but can I keep multiples...maybe five or six? Filtration wise, I have two canisters Fluval 305 and Magnum 350 and a HOB 350.