I am presently retablishing my 46gal. mbuna african tank. I lost all of my fish due to a heater malfunction, I.e. I made fish soup...... I have reintroduced six fish and was wondering what would be the most i should add. I have at present a pair of black bar zebras, a pair of ob zebras, a pair of psduchromis ahii and a 4 inch platoctomis. I purchased a heater with an auto shut off to avoid making more soup......Open for sugestions. :cool2: