river rocks in aquarium

[penguinpimp1990]

is it safe to put POLISHED RIVER ROCKS in your aquarium? I bought them at my LFS and they said it was alright but on the packing it says do not use in aquariums? are they not safe for aquariums because they are polished?

 

[WILDER]

Take a look here.
http/www.fishtanksandponds.net/general/tank_decor.htm