We had some plumbing issues and the water sat stagnant for a hot and sunny week until we could get the materials needed for the repair. Needless to say the pool was dark green. I slammed the pool for several days. It turned blue, test kit has shown zero combined chlorine for a long time. I continue to keep the chlorine levels at SLAM. I’ve gone through over $150 in liquid chlorine. My other chemicals are right where they should be. Is my filter junk? Should I floc? Help!
