ATO and Dosing checked by reef math.

Professional buying context

• Manual top-off works until a busy week turns evaporation into a salinity spike.
• Check sensor redundancy, reservoir size, pump lift, fail-safes, and whether dosing is needed yet.
• Professional fit checks should validate the catalog value behind "smaller water volume + evaporation = faster salinity swing" against the actual tank dimensions, bioload, livestock goal, and maintenance cadence.