Your tank volume is uncertain: show the calculation as an interval worksheet FishyMag | https://fishymag.com/articles/aquarium-volume-uncertainty-interval Published 2026-11-06 Recordkeeping worksheet. Not a treatment instruction or compatibility clearance. Keep personal details out of copies you intend to share. Operating configuration and date: ____________________________________________________________ Lower volume bound, unit and supporting method: ____________________________________________________________ Upper volume bound, unit and supporting method: ____________________________________________________________ Scaling rule and units, if applicable: ____________________________________________________________ Endpoint calculations and unresolved input: ____________________________________________________________ Replacement measurement and revision date: ____________________________________________________________ Sources and scope: see the linked article.