this is my 800litre http://www.fnzas.org.nz/fishroom/viewtopic.php?t=5482 the textilius have since passed away and the baenschi is in another tank. for an mbuna tank, you could try group of each of these - labidochromis caeruleus (electric yellow), any maylandia or pseudotropheus sp. maybe maylandia lombardoi, maybe a group of red zebras (pseudotropheus zebra "orange/red") a group being 1m 3f, and a few larger bristle noses, i think that would look quite good, you would have orange, yellow and blue. maybe you could substitute the lombardoi for some cyrtocara moorii??