First thing first: You should send the coral back to the store untill you are ready for it. Corals are very sensitive to changes in the water and requier full salt tanks most of the time. Corals need lights that will prob kill most plants in a FW tank. Corals cannot live with any copper based substances. Corals are nice, but only when you are ready to care for them. i am an impulse buyer and i didnt get corals, which is saying something. Im the guy who goes to the pet store and sees a nice fish, or a lonly looking one, and buys it then and there, and i would never buy a coral bacause i know its better off at the LFS. Ok, so plz return the coral then do some research on SW corals and other inverts. when you are done that you can buy a coral again.