Treatment stock ledger: record bottle use without guessing what remains worksheet
FishyMag | https://fishymag.com/articles/aquarium-treatment-stock-usage-ledger
Published 2026-11-06

Recordkeeping worksheet. Not a treatment instruction or compatibility clearance.
Keep personal details out of copies you intend to share.

Local bottle identifier, full name, market and lot:
____________________________________________________________

Printed expiry and known opening date:
____________________________________________________________

Labelled starting contents and unit:
____________________________________________________________

Withdrawal time, quantity and purpose:
____________________________________________________________

Spills or unrecorded losses, with uncertainty:
____________________________________________________________

Nominal book balance and manufacturer condition question:
____________________________________________________________

Sources and scope: see the linked article.