Hi guys, i'm setting up my rio 180 for mbuna. I will be using playsand as substrate, river cobbles for rockwork and filtering using a fluval 205 (have removed juwel filter). My question is i would like to stock it with labidochromis caeruleus and pseudotropheus zebra (if thats still its correct name) and i don't know if i will get away with four of each as i would prefere this, or even five of each if that will be better stocking. Suggestions most welcome.