I need help. We opened our second homemade inground pool this year that we fill with river/stream water. Are previous pool of 3 years was also filled with river/stream water and was about 10,000 gallons. It started with brown water, high Alkaline and normal PH. After decreasing the Alkaline and running pump for about a week straight the water would become crystal clear. We increased our pool size to about 18,000 gallons by making a pool from a grain bin placed in ground and lined with a pool liner. We started with the same river/stream water. It has Alkaline above 300 and normal PH. We knew nothing about the BBB method. So we have used chemicals to get the Alkaline normal, added Algeciide, Shimmer, Rust and Scale out, and Trichlor Tablets. The pool was getting almost clear except the middle of the pool. All readings for Alkaline and Ph were normal. The Chlorine reading was at 0. So we shocked and added Cyanuric Acid to the pool. The next morning the pool is even more brown then when we filled it. The Alkaline, PH, and Cyanuric Acid were normal, the Chlorine was 3. I took the Trichlor feeder out as I felt the shock did something to the pool. Any ideas what to do next? We have been at this for 3 weeks. I know this river/stream water in our pool will clear, but I'm not sure why it is not.