new nano with tetratec ex canister filter (help)

1 Feb 2009
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my LFS has 5foot marine tank running with just a canister and the tank is beautiful. he suggested that i should get one too so i did some research and started a thread on it etc, and i came to a conclusion and bought one.

my LFS didnt mention anything about the filter media inside the filter. yes it has bio balls and will become a NO3 factory unless cleaned often with weekly water changes which i dont mind:) i love spending time with my tank:)

but could i change the bioballs with some broken up live rock? iv heard of somebody doing this, but thats all i have heard.

what other changes could i possibly do? if any. and any suggestions please?:thumbup:
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