Thanks! The driftwood was a great find. I actually have a third piece sitting on my patio that is too big to fit in the tank. It is more like a stump. Anyways these pieces took quite a while to get them to sink, but it was worth the wait.
My pleco really cleaned them up when we removed him from the pond at the end of the summer. Whomever said that plecos stop eating algae when they mature was wrong. This guy is a machine!