Is it algae or is it dirt from trees?

Barbara Allen

New member
Jun 28, 2011
3
Last three openings show normal cloudiness for few days and then dark dirty looking blobs of algae on floor which after being vacuumed goes away and return following day. Used liquid shock, CU7, flock and disappears after vacuuming and back as soon as a few hours.Chemistry perfect in our salt water pool.