During this summer every time I put chlorine amd algecid into the pool this foamy oil stuff comes up, the green pool is the foam about 5 hours before the picture with a blue pool, I would like to know what this is and how to prevent it
http://tinypic.com/view.php?pic=qn4fg8&s=8#.U9RCxRnD_qA in years past
http://tinypic.com/view.php?pic=auxvmt&s=8#.U9RDYRnD_qA
http://tinypic.com/view.php?pic=qn4fg8&s=8#.U9RCxRnD_qA in years past
http://tinypic.com/view.php?pic=auxvmt&s=8#.U9RDYRnD_qA