Thank you for all of the suggestions! I have to apologize... I think I over-reacted to the situation. I was just SO excited about everything and was SO looking forward to aquascaping that this "bump" threw me off big time. The rock is now in the tank with 20 gallons of water (just enough to cover it). I will go to the store tomorrow and get another 50lbs. of rock, maybe more. I have to say that this baby is going to be so purty when it's done!