Air bubbles coming from waterfall plumbing are usually caused by trapped air, low water levels, restricted pump intake, or air entering through plumbing connections. Small amounts of air may be normal when starting a pump, but continuous bubbling may indicate an issue that needs attention.
Common causes and solutions
- Trapped air in the plumbing: Air may become trapped in the plumbing after installation, maintenance, or restarting the pump. This air typically clears as water circulates through the system.
- Low water level: If the water level in the skimmer, pump vault, or reservoir is too low, the pump may draw in air. Add water as needed to maintain the proper operating level and keep submersible pumps fully submerged.
- Clogged pump intake: Leaves, debris, or clogged intake screens can restrict water entering the pump. Disconnect power before inspecting and cleaning the pump intake and filter screens.
- Loose plumbing connections: Air may enter through loose or improperly sealed connections on the suction side of the plumbing. Inspect accessible fittings, connections, and seals for damage or looseness.
- Air pockets in plumbing: Certain plumbing configurations may allow air to collect at high points or inside sections of pipe. Persistent air pockets may require adjustments to the plumbing layout.
When should I be concerned?
Occasional air bubbles after starting a waterfall pump are generally not a concern. However, continuous bubbling, reduced water flow, or unusual pump noises may indicate a problem.
Important: Never allow a pump to run dry. If the problem continues after checking the water level, pump intake, and plumbing connections, submit a request through the Aquascape Customer Care contact form.