I have a 50 gallon tank, doing a tanganyikan setup, running a Rena XP2 canister filter, with a bunch of lava rock that I drilled holes and caves into, and some choice pieces of old live rock that I used to have in a saltwater setup that I boiled and rinsed. I'm using a mix of primarily crushed coral/aragonite and some plain 'ol gravel as substrate. (I'm almost finished a DIY overflow and DIY wet/dry sump (rubbermaids & dollarstore dish scrubbies - about 8gal of water and 4gal of biomedia) that I will be adding to the setup as well once it's finished and I trust it...) I'm still in the tail-end of my cycling, as the tank is new, but I currently have: (from a previous tank - and started my cycling process, so not appropriate for an african cichlid tank, but I'm leaving him anyway) 1 clown loach, 5 giant danios, 4 altolamprologous compressiceps, 3 lelupis and 1 small spotted pleco (not sure what kind - but it's over a year old and is only 2" long - was in a 10 gallon tank prior, so it should have grown a little bit if it were a regular pleco...) I will be adding either some julidochromis marlieri or transcriptus (maybe 4-6), and I'd like to add a pair of frontosa, or if I can find them tretocephalus, as they look similar, but stay smaller, which ultimately will be better for my tank.