Hello!! I'm a newbie on here and have lots of questions. We installed an 18' Above Ground with a 1hp Hayward pump in June of this year. The water was great the first week (according to our pool store). It stayed that way for about a month, and then things began to go down hill. It was VERY hot, and the water started turning...dingy, then green, then brown . Back to the pool store, lots of chemicals to treat algae, both green and mustard, and lots of shock. It didn't clear up fast enough for us, so we drained it. Filled it back up, everything was great for about 4 more weeks, now we are at the same place AGAIN!! We are planning to drain it again tomorrow. I don't have a T100 test kit yet, been using the WWorld kit and the strips. I would like to get away from the pool store method and go with the TFP method. Where do I start?