Originally posted by trainfever
Do not leave the CC in because it will eventually work its' way back to the top. Syphon the CC out into little filter bags or stockings and then use these bags to generate bacteria into your sand. Once you have the sand in your tank, place some of the bags in your filter or behind some live rock. If you take all the CC out right away, you will start another cycle in your tank because you will be removing bacteria. After a while, you can remove the bags one by one. Do not use sand from the beach because you do not know what you will be putting into your system. There could be some form of bacteria or some little critters in the sand that you do not want in your tank.
Yup, :yes:.
Could not have said it better myself!