I just purchased a foreclosure HUD home. The pool is dark green and slimy. It had a lumber and black polyfilm cover over it for liability reasons. I am debating between draining it and treating it. I am leaning towards draining it. I read Ben's post which stated that I may be looking at 75 gallons of bleach to get things clear again. I think I would rather take the hit on my water bill and just drain it, but I'm concerned about floating the pool. I know it's an issue, and I keep reading that it depends on where you live and what the soil is like, but don't know if my location is a problem area. I live just North of Houston, Texas and have a gunite pool with a D.E. filter. Any advice???