Cichlid Bio-Gold+ is the only diet appropriate for your fish that contains our Hikari-Germ, a live (viable) living micro-organism which offers a number of benefits which you have already encountered. Depending on their size and if you want to add some bulk, you might also consider using Massivore Delite. Visit http://www.hikariusa.com/tropical/massivoredelitehttp://www.hikariusa.com/massivoredelite.phs for more information.