Malawi Rock And Substrate Options

[clivealive]

hi,
what options are there for rock for malawi and are any of the resin etc rock any good to use to keep the weight down etc.
maybe a mix of real and resin etc ?
 
also what are my substrate options ?
 
i current have gravel in my new world cichlid tank , how does substrate differ regardig cleaning etc ?

 

[bullit]

i find the sand the best as the poo stays on top so easier to clean. The fish like sifting it aswell. For rocks i go to a stream or brook to fetch them. Could try garden centres. cheers