Reef Salt Calculator 2026

Reef Salt Calculator is designed for marine aquariums, reef tanks, and small saltwater tanks. It helps estimate salt dosage, water change volume, and salinity changes after top-off or maintenance. Core features include tank volume calculation from dimensions, sea salt grams for a target salinity, reverse water change calculation from current and target salinity, maintenance logs for water changes, salt additions, top-off, and measurements, plus saved tank templates and salt mix parameters. All data stays on the device for long-term offline use.