I have a valve on the output side of my filter that i use to check to make sure the water is clear going back into the pool. I guess it was put there when the pool was built before they had multi-valves. I am getting a slight film on the water line in the pool and in the cup that i test the water with. I have replaced my whole mutli-valve due to the insides were all craked and broken and all new filter elements this week. Replaced the top manifold last year. Everything is seating up well and all gaskets are lubed and fit tight inside the DE filter. I cant for the life of me find out what this is. I am trying to turn my pool right now and I think that is the reason it will not clear up. Any suggestions guys/gals?? Thanks in advance.
Sorry they aren't the best pics but was trying to get them with the flashlight to see the film better