Are Air Bubbles in my Pool Pump Normal?

You could have bubbles if the filter is pulling water more quickly than the system can refill, so if you fill the water just a little higher, it may help. Otherwise, you could have a lid not quite tight enough on the pump, or a plug that is loose. Tighten all the fittings, make sure the water is high enough, and then let it run for a while (an hour) and see if it clears itself up.

A few bubbles are fine, more than that or large amounts of air that make the pump chug or gurgle are not okay for running the pump…