The pump runs normally, but there is a constant small air bubble visible under the clear lid.

Safety first: Turn off the pump before opening the lid.

Reduce air ingress:

• Clean and lubricate the Speck lid O-ring and ensure the lid is tight.
• Check suction unions for drips when the pump is off; reseal if necessary.
• Maintain pool water level at the proper height to avoid vortexing at the skimmer.

A small stationary bubble is often acceptable, but if it grows or causes loss of prime, further leak investigation is needed.