Adding baking soda will raise your alk, but will not clear the water. It also won't lower your pH. If anything, it might raise it just a little. If the pH is between 7.0 and 7.8, and the water is blue, it probably is okay to swim in-- except if chlorine is too high, it may fade or break down swimsuits. Plus, if it's cloudy, it is a danger to have kids swimming who might get into trouble underwater but not seen by someone who could help. So-- it's really your call, but until we know water results other than just "good", we can't tell you for certain which way to go.

Edit: Pooldoc's "post" button is faster than mine today