All water readings check out okay. I've been doing regular water changes. The water is not cloudy at all and I do not overfeed. But it looks, well, hazy. From a front view it looks fine but if you look through from one side to the other, it looks sort of hazy. Not cloudy or dirty. Just hazy. It's 10 gallons. I can't figure out why. It's not really noticable unless you come direct from the fish store or pet store and their tanks are crystal clear.