What an aerator's bubble does

A bubble from a diffuser or fountain is millimeters wide. At that size it's strongly buoyant: it rockets to the surface in seconds and hands most of its oxygen back to the air instead of the water. A fountain oxygenates the water it can throw, and only that water. In shallow water, that can be enough. In anything deep enough to stratify, the bottom layer never sees it.

Two fountains spraying water above a pond at sunset

What a nanobubble does instead

Nanobubbles are roughly 2,500 times smaller than a grain of salt: small enough to be neutrally buoyant. They don't race to the surface; they stay suspended for weeks, dissolving their oxygen throughout the column, including at the sediment interface where the conditions behind algae, odor, and fish loss actually form.

What we concede, every time

What surface equipment cannot do is restore conditions at depth, and that's where every problem on our map begins. If your aerator was running during a fish kill, this is why: the crash formed below the water it could reach.

The numbers, carefully

Published research reports substantially higher oxygen-transfer efficiency for very small bubbles than for conventional aeration. Here is a specific, checkable instance rather than a loose "studies show":

Now the part most spec sheets skip: a laboratory percentage is not a promise about your water. Transfer efficiency in the field depends on depth, temperature, load, and the machine actually installed. This category's habit is to print a headline efficiency figure with no per-install data behind it, which is part of how it earned skeptical regulators. Our own units' transfer figures will publish with clean-water test results to the recognized standard, ASCE/EWRI 2-06, cited, or they will not publish. Every installation is instrumented from day one, and each unit meters the oxygen it delivers against the change the water shows; how we measure is already public.

Tell us what your water is doing.

A specialist reads your description and replies in writing: what it usually means and what we would measure first.