Pump flow is not aquarium exchange worksheet Article: https://fishymag.com/articles/aquarium-pump-flow-versus-exchange Scheduled publication: 2026-11-15T04:00:00.000Z Original FishyMag editorial worksheet. Worked cases are illustrative, not records of a real aquarium or treatment instructions. Chosen boundary and drawing revision: ______________________________ Each pump intake location: ______________________________ Each pump discharge location: ______________________________ Actual operating flow record and time: ______________________________ Inward flows: ______________________________ Outward flows: ______________________________ Internal flows excluded from boundary totals: ______________________________ Other flows or changing storage: ______________________________