Thanks Kim. Now that I can see the bottom of my pool pretty visibly, when I brush, I get brown clouds that kick up from the bottom. I assume it is either algae or dirt. The algae I had, although it turned the water green, actually looked like yellow sand on my sweep hose, so I am thinking it can be this. Is there anything I can do to get rid of that? It seems too fine to get picked up by the sweeper and I don't have a vac. I have been trying to push it toward the center drain with my brush, not sure if that is doing anything. Also, any way I can know if it is dead or alive?