i am filling my tank up with water and my sand is forming small balls, some arefloating some are on the bottom, bunch of small balls. i can break them up, but its just weird, what is going on
http://img145.imageshack.us/my.php?image=1008082211sr8.jpg
this is the only way I know h ow to put a pic up. this is me looking down into the tank from the top. you can see the balls up top floating, and you can barely see a bunch of balls on the sand at bottom.