I purchased 3 large pieces of driftwood yesterday and started soating them in water. Today at about 3:00pm I looked in the buckets and the water was so yellow. What is the cause of this? What is somthing I can do to get my driftwood ready to be added to my tank? Because I don't want to add it to the tank if Its going to make my water yellow. What are somethings I can do to get the driftwood clean? Thank you