Why does my fish tank get cloudy after water changes?

My fish tank is under populated, cleaned regularly, all chemical levels are testing safe (ammonia, chlorine/ chloramine, nitrate/ nitrite, pH, etc) and yet about a day after each water change my tank stays cloudy for about a day or two. This means a cloudy tank every week and can't be good for my babies! I use aquarium salts, Top Fin water conditioner, and Amquell plus during my water changes (we have high chloramine levels in our water here and that doesn't evaporate out with aging the water first.)