The thing with silvers is that they grow really big and long. HUGE TANK is necessary otherwise they will grow deformed. I would suggest using a canister for filtration. And if you can add more filtration, the better! Don't put too much substrate. Mine is not even an inch high. As for plants... I personally don't put plants cuz I like to keep it simple and easy to maintain.
**I suggest you read threads on aro keeping before you get one.
**I suggest you read threads on aro keeping before you get one.

if you plan on keeping this fish FOR LIFE, then you should plan on a tank thats at least 8ft long and 3ft wide. a 180 (6x2x2) would be good for several years as some have said but is definately too small to house this fish for its entire life.