I am doing a mixed african tank. PH is 8 KH is 6. Filtration is two AC 500's and a Fluval 404 run as a bio filter. I am just looking for cool fish that will get along, I am not worried about a biotope specific habitat. Right now I have a Frontosa, a Tropheus, a Ovatus, a Venustus, a Compressiceps, a Red and a Purple Peacock and a Borleyi. There are two clown loaches and a red lipped loach on clean up detail. I am looking for recommendations on how many more fish I can put in this tank and what types. They have been living together for about three months happily. They have all grown together and are now between three and five inches or so (don't have a ruler). Any suggestions would be appreciated. Thanks.