A micron is one millionth of a meter. In pool-robot marketing, the number describes the approximate particle size the filter is designed to capture.
What a micron rating means
A micron is one millionth of a meter. In pool-robot marketing, the number describes the approximate particle size the filter is designed to capture.
Daily debris
Coarser baskets around 150–200 microns are practical for leaves, hair and visible dirt. They usually maintain flow and rinse quickly.
Fine dust
Ultra-fine inserts can target silt and pollen, but they load faster. Treat them as a second-stage tool, not automatically the best filter for every run.
Ask before buying
Confirm whether the advertised fine filter is included or sold separately, and whether it replaces or layers with the standard basket.
Your next step
Shortlist the models that fit your pool, then compare exact model-year specifications and current manufacturer terms before ordering.