Originally Posted by dave the wath

Are you saying you have literally bought and set up an aquarium on thursday and already have livestock i it?
I'm no expert but if you have you are in a bit of a hurry, it can takes weeks for your water to reach the correct parameters, (have you done any testing) and several more weeks before adding livestock should be considered.
I suggest you either go back to your lfs and buya siutable book or gp to your library and buy one, study the book very carefully, they will lead you through the creation of a water world in very easy steps.
Nevertheless I hope your tank is a success.