Ever noticed air bubbles inside your dosing tubing and wondered, “Will this affect dosing accuracy?”
Don’t worry—AUTOAQUA has compiled a complete guide to help you understand why bubbles form and how to resolve them easily. With proper installation and a few simple tips, you can enjoy worry-free dosing every day!

 

● Universal Tubing Design – Install with Confidence

 

Smart Doser comes with 6.4 mm outer / 4 mm inner diameter PVC tubing as the standard inlet tubing size. Here’s why we chose it:
● High Compatibility – Perfectly matches most dosing container connectors on the market.
● Flexible Setup – Prefer using 1/4” RO hard tubing? Swap it in effortlessly—no adapter needed.
This universal design not only simplifies setup but also helps minimize the risk of air leaks due to loose fittings.

★ Want to use silicone tubing? Simply pair it with our 1/4" Stem to 3/16" Hose Connector (SH-1043) Silicone Tubing Adapter—Smart Doser is ready to go.

 

● Proper Installation Tips (Prevent Air from Entering)

 

Under normal conditions, as long as your dosing container contains supplement and the tubing is properly inserted, air will not enter through the inlet—ensuring stable and accurate dosing.

 

Proper tubing installation is the key to avoiding trapped air. Here’s how to do it right:
1. Firmly insert the tubing into the 1/4" quick connector.
As you push, you’ll feel two points of resistance as it passes through the internal black O-ring.

 

2. Double-check that the tubing is fully seated and tightly sealed.
If needed, disassemble the device and visually confirm that the tube reaches the bottom of the fitting.

 

● Why Is the Pump Indicator Flashing Red?

 

If you notice the pump indicator flashing red but your dosing container still contains supplement, it’s likely that air has entered the tubing and is trapped near the optical sensor inside the inlet tube.

This air bubble can cause the sensor to mistakenly detect an "empty supplement" and trigger the red warning.

During this time, calibration will be temporarily disabled, but the normal dosing functions will continue to operate as usual.

 

● Still Seeing Bubbles? 5 Simple Ways to Remove Air Bubbles

 

Even if tubing is properly installed, tiny bubbles may gradually appear in the outlet tube over time.

This happens because the supplement's surface tension isn’t strong enough to completely hold back atmospheric pressure, allowing microbubbles to form.

 

★The good news: These bubbles do not affect dosing accuracy.
However, if you want a cleaner look or complete peace of mind, here’s how to fix it.