Today I began the process of getting my fish ready for a 75g. I used a nice fine silica playsand instead of the ugly CC which has turned grayish green. I have the tank filled and is now cycling. My question is I know something should be moved from my other tank to aid in the transfer. Do I have to transfer some of the CC or would drawing some water from the other tank work ok in the new one? I also put in 20 pounds of live sand in this tank.