Have you ever tried dumping it in more often??? I'm HOPING by keeping the cover on when it's not in use, and maybe pouring in a gallon after everytime we use it, that that will help- then it will be out of the sun, and have time to work til next time. KMIM??? I added 2 gallons when we were first setting it up, 2 days ago, and I just added another gallon about 1/2 hour ago- the cover is on, so...hopefully it will help. I'm thinking we could just use the shock stuff if/when we need to instead of adding stuff all the time. I really don't like the thought of us being in chlorine all the time when we're in it! I would LOVE to be able to say our pool water is actually HEALTHY to absorb into our skin! LOL :-)