As the tittle says I'm looking to trade a RODI system. I have had this system for 10 years and it will need new filters and a new canister since one of them is cracked. What i would like to get would be couple a polyps or mushroom. I am not looking for something rare, just something different. I live in johnson city tn, but i will be traveling towards chattanooga this friday. I will try to post picture later today.