I agree with the idea of making it a cichlid community rather than 1 or 2 monsters. Personally I'd make a community of eartheatars.
I have Steindachneri, Jurapari, Balzanii, Brasiliensis and Surinamensis in my SA tanks. They are wonderful to watch and are a very social cichlid. They prefer to be kept with a group of at least 6 eartheaters, in which they exhibit social behaviour, and can become listless in absence of fellow species. Anyway, thats what I'd do with a spare 180 gallon!
I have Steindachneri, Jurapari, Balzanii, Brasiliensis and Surinamensis in my SA tanks. They are wonderful to watch and are a very social cichlid. They prefer to be kept with a group of at least 6 eartheaters, in which they exhibit social behaviour, and can become listless in absence of fellow species. Anyway, thats what I'd do with a spare 180 gallon!