Filter Etiquette (page 3 of 3)
Topic 36 of 41 · Reference FF-T-36/3 · Page 3 of 3: Supplementary provisions
The filter hums at a frequency of 50 hertz, which the Registry has determined is the note G, roughly. Several fish have attempted to hum along.
None have succeeded, because fish cannot hum, but the effort has been noted with respect.
Last updated: 19 October 2026. This page has been reviewed by the Committee for Reviewing Pages, which determined that it is a page.
