ok, my sand filter has arrived and I am expecting the pump today or tomorrow so Im excited about getting them hooked up and running. One thing I was wondering.......I need to scrub the walls of my pool to remove the residue from when the pool water was green, earlier this spring. Its been 2 or 3 weeks since I killed the algae, but the water is still chilly so I haven't gotten in and scrubbed the walls yet. I did vacuum to waste the bottom of the pool after killing the algae, but you can tell there is a slightly green tint to the walls. My question is this: Would it hurt to scrub the walls and let the new filter remove the dead algae or would it be better to let it settle to bottom and vacuum to waste? Starting out with a new filter I don't want to "gunk" it up with something that will be hard to get rid of. That may not even be an issue, it may rinse out easily, but I've never had a good filtering system (mine always just blew the dead algae back into the pool) so Im not familiar with how dead algae particles affect a sand filter...........