hi guys and gals im looking into setting up an African cichlid tank. I have had a few fish tanks a few years ago including a 6ft discus tank which was my pride and joy until it started leaking. I have been looking at getting at getting a juwel rio 450. Will I need to add a second filter or will the built in filter be able to handle the bio load? Would i be able to house them with one or two bristlenoses?